| Name | ELO | Title | Federation | Games |
| Korniushin, Nikolay | 2255 | IM |
 Russian Federation
|
183 |
| Kornprat, Manfred | 1986 |
 Austria
|
17 | |
| Kornrumpf, Joachim | 2033 |
 Germany
|
52 | |
| Kornthaler, Reinhard | 2130 |
Austria
|
60 | |
| Kornucik, Jan | 1980 |
 Slovakia
|
9 | |
| Kornyukov, Alexey | 2452 | IM |
Russian Federation
|
17 |
| Korobkin, Maxim | 2293 | FM |
Russian Federation
|
92 |
| Korobkov, Piotr | 2361 |
 Ukraine
|
200 | |
| Korobov, Anton | 2651 | GM |
Ukraine
|
2348 |
| Korobov, Ilya | 2386 | FM |
Russian Federation
|
71 |
| Korobov, Ivan | 1477 |
Russian Federation
|
1 | |
| Korochenskiy, Alexey | 2256 |
Russian Federation
|
23 | |
| Koroev, Alan | 1997 |
Russian Federation
|
8 | |
| Koroglou, Viktor | 2007 |
 Greece
|
12 | |
| Koroglu, Huseyin | 1590 |
 Turkey
|
28 | |
| Koroid, Janna | 1917 |
 France
|
20 | |
| Korol, Dimitry | 2287 |
Ukraine
|
18 | |
| Korol, Jiri | 2024 |
 Czech Republic
|
28 | |
| Korolchuk, Nikolav | 2226 |
 Belarus
|
22 | |
| Korolev, Alexey | 2123 |
Russian Federation
|
9 | |
| Korolev, Anton | 2114 |
Russian Federation
|
25 | |
| Korolev, Dmitry | 1791 |
Russian Federation
|
35 | |
| Korolev, Nikolaj | 2136 |
 Denmark
|
65 | |
| Korolev, Pavel | 2110 |
Russian Federation
|
17 | |
| Korolev, Sergei | 2288 |
Russian Federation
|
27 | |
| Koroljova, Valerija | 2127 |
Russian Federation
|
111 | |
| Korolkov, Dmitry | 2213 |
Russian Federation
|
11 | |
| Korom, Gabor | 2112 |
 Hungary
|
2 | |
| Koronas, Vasilios | 1863 |
Greece
|
13 | |
| Koronghy, Gyula | 1980 |
Hungary
|
15 | |
| Korosciel, Aneta | 1951 |
 Poland
|
146 | |
| Korosec, Stefan | 1831 |
 Slovenia
|
2 | |
| Korosi, Gejza | 1752 |
Slovakia
|
1 | |
| Korosparti, Andras | 2038 |
Hungary
|
3 | |
| Korosparti, Sandor | 2116 |
Hungary
|
84 | |
| Korostelev, Nikolay | 1924 |
Russian Federation
|
9 | |
| Korostelev, Stanislav | 1966 |
Russian Federation
|
8 | |
| Korostenski, Frantisek | 1975 |
Czech Republic
|
68 | |
| Korotchenko, Anton | 2162 |
Russian Federation
|
9 | |
| Korotkjevich, Stanislav | 2358 |
Ukraine
|
211 | |
| Korotkova, Ekaterina | 1484 |
Russian Federation
|
27 | |
| Korotylev, Alexey | 2573 | GM |
Russian Federation
|
687 |
| Korou, Laskarina | 1889 |
Greece
|
115 | |
| Korov, Zvonko | 1998 |
 Croatia
|
8 | |
| Korovashkin, Maxim | 2136 |
Ukraine
|
8 | |
| Korovianski, Dmitry | 2245 |
Russian Federation
|
29 | |
| Korovin, Mikhail | 2335 | FM |
Russian Federation
|
39 |
| Korovin, Viktor | 2056 |
Russian Federation
|
21 | |
| Korovkin, Stepan | 2325 | FM |
Russian Federation
|
17 |
| Korpa, Bence | 2546 | GM |
Hungary
|
547 |
| Korpalska, Joanna | 1851 |
Poland
|
23 | |
| Korpalski, Maciej | 1879 |
Poland
|
13 | |
| Korpalski, Robert | 2088 |
Poland
|
42 | |
| Korpan, Kasjan | 1915 |
Poland
|
2 | |
| Korpas, Laszlo | 1996 |
Hungary
|
49 | |
| Korpas, Zoltan | 2111 |
Hungary
|
66 | |
| Korpics, Zsolt | 2300 | FM |
Hungary
|
367 |
| Korres, Evangelos | 1916 |
Greece
|
25 | |
| Korres, Georg | 2124 |
Greece
|
26 | |
| Kors, Hans | 1931 |
 Netherlands
|
6 | |
| Korsa, Jindrich | 2038 |
Czech Republic
|
56 | |
| Korsak, Gregoire | 1866 |
France
|
9 | |
| Korschner, Miroslav | 2064 |
Czech Republic
|
30 | |
| Korsholm, Asbjorn | 1983 |
Denmark
|
9 | |
| Korshunov, Sergey And. | 2286 |
 Fide
|
11 | |
| Korsos, Imre | 2083 |
Hungary
|
19 | |
| Korste, Sebastian | 2002 |
Germany
|
34 | |
| Korstin, Maris | 2146 |
 Estonia
|
69 | |
| Korsunsky, Aleksandr | 2179 |
Russian Federation
|
14 | |
| Korsunsky, Yuri | 2369 | IM |
Ukraine
|
117 |
| Korsus, Bernd | 2289 |
Germany
|
224 | |
| Kort, Jacob | 2153 |
Netherlands
|
91 | |
| Kort, Wilco | 1990 |
Netherlands
|
9 | |
| Korte, Andreas | 1733 |
Germany
|
18 | |
| Korte, Markus | 1882 |
Germany
|
94 | |
| Kortel, Bernard | 1577 |
France
|
1 | |
| Kortenbusch, Christoph | 2077 |
Germany
|
59 | |
| Kortesharju, Jaakko | 1970 |
 Finland
|
6 | |
| Korth, Daniel | 2176 |
Germany
|
38 | |
| Kortis, Wim | 2104 |
Netherlands
|
1 | |
| Korttila, Matti | 2077 |
Finland
|
8 | |
| Koryakov, Sergey | 1945 |
Russian Federation
|
18 | |
| Korytko, Peter | 2081 |
Slovakia
|
75 | |
| Korze, Danilo | 1982 |
Slovenia
|
7 | |
| Korzeb, Peter | 1635 |
 United States
|
27 | |
| Korzekwa, Marcin | 1882 |
Poland
|
3 | |
| Korzhukov, Andrey | 1966 |
Russian Federation
|
14 | |
| Korzubov, Peter | 2387 | IM |
Belarus
|
236 |
| Kos, Bruno | 1997 |
Croatia
|
7 | |
| Kos, Emin | 2179 |
 Bosnia And Herzegovina
|
7 | |
| Kos, Igor | 1989 |
Slovenia
|
30 | |
| Kos, Milorad | 1996 |
 Serbia
|
13 | |
| Kos, Pawel | 2234 |
Poland
|
94 | |
| Kos, Sebastian | 2208 |
Germany
|
135 | |
| Kos, Slobodan | 1905 |
Croatia
|
5 | |
| Kos, Toni | 2286 | IM |
Slovenia
|
317 |
| Kosa, Gergely | 2004 |
Hungary
|
32 | |
| Kosa, Jeno | 2041 |
Serbia
|
18 | |
| Kosa, Laszlo | 1798 |
Hungary
|
107 | |
| Kosa, Peter | 2059 |
Hungary
|
141 | |
| Kosachki, Vasil | 2099 |
 Bulgaria
|
30 | |
| Kosak, Marjan | 1857 |
Slovenia
|
8 | |
| Kosak, Michael | 2193 |
Germany
|
70 | |
| Kosak, Robert | 2192 |
Germany
|
151 | |
| Kosakowski, Jakub | 2482 | IM |
Poland
|
379 |
| Kosanke, Stefan | 1934 |
Germany
|
10 | |
| Kosanovic, Dragan | 2215 | FM |
Serbia
|
64 |
| Kosanovic, Goran A | 2258 | GM |
Serbia
|
650 |
| Kosanovic, Olgica | 2050 |
Serbia
|
3 | |
| Kosanski, Stanko | 2338 | IM |
Croatia
|
445 |
| Kosar, Mikulas | 1734 |
Slovakia
|
25 | |
| Kosar, Milan | 1663 |
Czech Republic
|
26 | |
| Kosarev, Andrei M | 2258 | FM |
Fide
|
20 |
| Kosarev, Dmitry | 2235 |
Russian Federation
|
55 | |
| Kosaric, Goran | 2153 |
Croatia
|
4 | |
| Kosashvili, Otar | 1880 |
 Georgia
|
1 | |
| Kosashvili, Yona | 2531 | GM |
 Israel
|
310 |
| Kosasih, Cecep | 2372 | FM |
 Indonesia
|
61 |
| Kosata, Frantisek | 1818 |
Czech Republic
|
7 | |
| Kosata, Jan | 1992 |
Czech Republic
|
39 | |
| Kosberg, Stian | 1518 |
 Norway
|
3 | |
| Kosc, Renata | 1992 |
Austria
|
45 | |
| Koscak, Jan | 1886 |
Slovenia
|
9 | |
| Koscianski, Roman | 1865 |
Poland
|
9 | |
| Koscielny, Edmond | 1887 |
France
|
31 | |
| Koscielski, Janusz | 2267 | FM |
Germany
|
517 |
| Kose, Serkan | 1984 |
Turkey
|
60 | |
| Kose, Ulya | 1605 |
Turkey
|
5 | |
| Kosebay, Osman | 2216 | FM |
Turkey
|
21 |
| Kosec, Tina | 2050 |
Slovenia
|
89 | |
| Kosegi, Marek | 1882 |
Slovakia
|
16 | |
| Kosek, Jiri | 1999 |
Czech Republic
|
62 | |
| Kosek, Marek | 2115 |
Czech Republic
|
7 | |
| Koselova, Zuzana | 1896 |
Slovakia
|
27 | |
| Kosenkov, Evgeniy | 2006 |
Russian Federation
|
2 | |
| Koseoglu, Erdem | 1550 |
Turkey
|
12 | |
| Koseoglu, Osman Ogul | 1816 |
Turkey
|
21 | |
| Kosev, Momchil | 1972 |
Germany
|
3 | |
| Kosfeld, Thorsten | 1762 |
Germany
|
7 | |
| Koshaev, Valerij | 1960 |
Russian Federation
|
10 | |
| Koshelev, Alexey | 1944 |
Russian Federation
|
10 | |
| Koshelev, Vladimir | 1818 |
Russian Federation
|
32 | |
| Koshevoy, Sergey | 1907 |
Russian Federation
|
6 | |
| Koshil, Tikhon | 1832 |
Russian Federation
|
56 | |
| Koshulyan, Egor A. | 2226 | CM |
Russian Federation
|
40 |
| Koshy, Varugeese | 2117 | IM |
 India
|
375 |
| Kosic, Dragan | 2367 | GM |
 Montenegro
|
2250 |
| Kosic, Eugen | 2213 |
Croatia
|
23 | |
| Kosic, Ljubisa | 1931 |
Serbia
|
18 | |
| Kosikov, Alexey I | 2376 |
Ukraine
|
295 |
| Name | ELO | Title | Federation | Games |
| Kosikov, Andrey | 2181 |
Ukraine
|
181 | |
| Kosilov, Roman | 2013 |
Russian Federation
|
27 | |
| Kosin, Jens | 2068 |
Germany
|
19 | |
| Kosina, Vladimir | 1785 |
Czech Republic
|
80 | |
| Kosinka, Vladimir | 1803 |
Czech Republic
|
7 | |
| Kosintseva, Nadezhda | 2483 | GM |
Russian Federation
|
971 |
| Kosintseva, Tatiana | 2475 | GM |
Russian Federation
|
1184 |
| Kosiorek, Andrzej Jr | 2136 |
Poland
|
18 | |
| Kosiorek, Lukasz | 1849 |
Poland
|
5 | |
| Kosiorek, Marek | 2259 |
Poland
|
150 | |
| Kosiorek, Przemyslaw | 1975 |
Poland
|
11 | |
| Kosir, Dejan | 1815 |
Slovenia
|
4 | |
| Kosir, Franci | 1915 |
Slovenia
|
24 | |
| Kosir, Pavla | 1869 |
Slovenia
|
109 | |
| Kositsin, Sergey | 2346 | IM |
Russian Federation
|
36 |
| Koskela, Niina | 2188 | WGM |
Norway
|
532 |
| Koski, Avraham | 2250 |
Israel
|
9 | |
| Koski, Pekka | 1840 |
Finland
|
67 | |
| Koski, Viljo | 1895 |
 Sweden
|
7 | |
| Koskimaa, Esko | 1938 |
Finland
|
7 | |
| Koskinen, Antti | 2020 |
Finland
|
31 | |
| Koskinen, Erkki | 1915 |
Finland
|
27 | |
| Koskinen, Henri | 2149 | FM |
Finland
|
583 |
| Koskinen, Matti | 1932 |
Finland
|
11 | |
| Koskinen, Mika | 2089 |
Finland
|
53 | |
| Koskinen, Veikko | 1929 |
Finland
|
180 | |
| Koskivirta, Jean Stefan | 2109 |
France
|
26 | |
| Koskoska, Gabriela | 1993 | WIM |
 Macedonia
|
243 |
| Kosmac, Blaz | 2146 |
Slovenia
|
303 | |
| Kosmac, Nikola | 1987 |
Serbia
|
2 | |
| Kosmadakis, Emanouel | 2113 |
Greece
|
10 | |
| Kosmas Lekkas, Dimitrios | 2249 | FM |
Greece
|
110 |
| Kosmidis, Ioannis | 2119 |
Greece
|
5 | |
| Kosmo, Santul | 2240 |
Finland
|
346 | |
| Kosmowski, Piotr | 2075 |
Poland
|
11 | |
| Kosmowski, Przemyslaw | 2179 |
Poland
|
36 | |
| Kosnar, Martin | 2050 |
Czech Republic
|
51 | |
| Kosnar, Pavel | 1972 |
Czech Republic
|
59 | |
| Kosny, Marek | 1875 |
Poland
|
25 | |
| Koso, Ekrem | 2221 |
Bosnia And Herzegovina
|
29 | |
| Kosogorov, Konstantin | 2198 |
Russian Federation
|
7 | |
| Kosokin, Valeriy | 2152 |
 Uzbekistan
|
1 | |
| Kosolapov, Petr | 2046 |
Russian Federation
|
35 | |
| Kosolapov, Viktor | 1993 |
Russian Federation
|
18 | |
| Kosolapova, Lilia | 2104 |
Russian Federation
|
18 | |
| Kosoric, Arsenije | 2204 |
Montenegro
|
19 | |
| Kosoric, Luka | 2084 |
Montenegro
|
26 | |
| Kosov, Alexey | 2172 | FM |
Russian Federation
|
35 |
| Kosov, Igor | 1890 |
Russian Federation
|
90 | |
| Kosov, Ivan | 2371 | IM |
Russian Federation
|
221 |
| Kosovac, Milan | 1873 |
Serbia
|
46 | |
| Kosovic, Miroslav | 2062 |
Croatia
|
23 | |
| Kosovs, Ernst | 1944 |
Germany
|
4 | |
| Kosowski, Todor | 2240 |
Germany
|
7 | |
| Koss, Christian | 2010 |
Germany
|
16 | |
| Koss, Dietrich | 1999 |
Germany
|
13 | |
| Kosse, Lukas | 1476 |
Netherlands
|
6 | |
| Kossen, Johannes | 1986 |
Netherlands
|
7 | |
| Kossobudzki, Robert | 1986 |
Poland
|
3 | |
| Kossov, Aleksandr S | 2239 | FM |
Russian Federation
|
13 |
| Kost, David | 1741 |
Slovakia
|
9 | |
| Kost, Marek | 1870 |
Slovakia
|
9 | |
| Kosta, Kelvin | 1976 |
 Albania
|
1 | |
| Kostadinov, George | 2043 |
 Canada
|
51 | |
| Kostadinov, Kostadin | 1720 |
Bulgaria
|
4 | |
| Kostadinov, Rumen | 2040 |
Bulgaria
|
64 | |
| Kostadinov, Slavey | 2200 |
Bulgaria
|
5 | |
| Kostadinov, Teodosi | 2142 |
Bulgaria
|
5 | |
| Kostadinovski, Zoran | 1929 |
Macedonia
|
44 | |
| Kostak, Tatiana | 2107 | WFM |
Ukraine
|
44 |
| Kostakiev, Dimitar | 2235 |
Bulgaria
|
8 | |
| Kostal, Jindrich | 1872 |
Czech Republic
|
8 | |
| Kostal, Otakar | 1803 |
Czech Republic
|
24 | |
| Kostanjevec, Tomaz | 2116 |
Slovenia
|
35 | |
| Kostanjsek, Zorko | 2110 |
Croatia
|
91 | |
| Kostanski, Marcin | 2029 |
Poland
|
11 | |
| Kostantinidis, Lazaros | 1933 |
Greece
|
1 | |
| Kostas, Alexandros | 1835 |
Greece
|
18 | |
| Kostas, Panagiotis | 2157 |
Greece
|
45 | |
| Kostava, Elene | 1896 |
Georgia
|
12 | |
| Kostelnik, Peter | 1652 |
Slovakia
|
4 | |
| Kostelny, Jozef | 2105 |
Slovakia
|
166 | |
| Kosten, Anthony C | 2366 | GM |
 United Kingdom
|
1438 |
| Kosten Forintos, Gyongyver | 1681 |
France
|
19 | |
| Kosteniuk, Alexandra | 2501 | GM |
 Switzerland
|
2533 |
| Kosteniuk, Oksana | 2096 | WFM |
Russian Federation
|
74 |
| Kostenko, Igor | 2242 |
Ukraine
|
33 | |
| Kostenko, Petr | 2338 | GM |
 Kazakhstan
|
675 |
| Koster, Jaco | 2074 |
United States
|
8 | |
| Koster, Jeroen Louis | 1909 | CM |
 Mauritius
|
28 |
| Koster, Leon | 2237 | FM |
Netherlands
|
37 |
| Koster, Ramon | 2319 | FM |
Netherlands
|
197 |
| Kostianis, Georgios | 2005 |
Greece
|
6 | |
| Kostic, Aleksandar | 1906 |
Serbia
|
1 | |
| Kostic, Brana | 2094 |
Serbia
|
3 | |
| Kostic, Branimir | 2082 | FM |
Serbia
|
46 |
| Kostic, Dejan | 1851 |
Serbia
|
9 | |
| Kostic, Dusan | 1935 |
Serbia
|
9 | |
| Kostic, Filip | 2206 | IM |
Serbia
|
34 |
| Kostic, Ivan | 1710 |
Slovakia
|
11 | |
| Kostic, Jovica | 2233 | FM |
Serbia
|
17 |
| Kostic, Milutin B | 2036 | FM |
Serbia
|
54 |
| Kostic, Misa | 2246 |
Serbia
|
29 | |
| Kostic, Nebojsa | 2275 | IM |
Serbia
|
183 |
| Kostic, Rodo | 1936 |
Germany
|
9 | |
| Kostic, Stefan | 2002 |
Serbia
|
6 | |
| Kostic, Vladimir | 1923 |
Montenegro
|
626 | |
| Kostic, Vladimir G | 2175 | GM |
Serbia
|
210 |
| Kostic, Vladimir V | 2013 | FM |
Serbia
|
68 |
| Kostic, Zivojin | 1869 |
Serbia
|
4 | |
| Kostic, Zoran | 1774 |
Germany
|
8 | |
| Kostin, Alexey | 2211 | IM |
Russian Federation
|
331 |
| Kostin, Andrey | 1706 |
Russian Federation
|
34 | |
| Kostin, Dimitry | 2260 |
Ukraine
|
8 | |
| Kostin, Ilya | 1922 |
Russian Federation
|
2 | |
| Kostin, Konstantin | 2177 | FM |
Russian Federation
|
134 |
| Kostin, Mikhail Y | 2233 |
Russian Federation
|
29 | |
| Kostin, Sergei | 2119 | FM |
Russian Federation
|
172 |
| Kostin, Yury | 1809 |
Russian Federation
|
7 | |
| Kostitsina, Liubov | 1965 |
Russian Federation
|
3 | |
| Kostiukov, Alexandr | 2271 |
Ukraine
|
16 | |
| Kostiukova, Liubov | 2235 | IM |
Ukraine
|
176 |
| Kostjukov, Aleksandr | 1942 |
Ukraine
|
22 | |
| Kostka, Alexander | 1929 |
Austria
|
13 | |
| Kostka, Dietrich | 1969 |
Germany
|
9 | |
| Kostka, Vit | 2220 | FM |
Czech Republic
|
3 |
| Kostlan, Jan | 1902 |
Czech Republic
|
7 | |
| Kostoglotov, Dmitry | 1968 |
Russian Federation
|
11 | |
| Kostoglotova, Valentina | 2043 |
Russian Federation
|
19 | |
| Kostolansky, Sebastian Lukas | 2414 | IM |
Slovakia
|
131 |
| Kostometov, S. | 2264 |
Russian Federation
|
18 | |
| Kostopoulos, Dimosthenis | 1788 |
Greece
|
5 | |
| Kostopoulos, Evangellos | 2190 |
Greece
|
50 | |
| Kostopoulos, Thomas | 1870 |
Greece
|
6 | |
| Kostopoulou, Sofia | 1816 |
Greece
|
17 | |
| Kostouros, Alexandros | 2022 |
Greece
|
93 | |
| Kostov, Deyan Samuil | 2331 | FM |
Bulgaria
|
39 |
| Kostov, Galin | 2035 |
Bulgaria
|
9 | |
| Kostov, Kiril | 2006 |
Bulgaria
|
1 | |
| Kostov, Kosta | 1614 |
Macedonia
|
1 | |
| Kostov, Stracimir | 2051 |
Bulgaria
|
9 | |
| Kostovetsky, Daniel | 2014 |
United States
|
1 | |
| Kostovic, Dar | 1941 |
Croatia
|
1 | |
| Kostowski, Andrzej | 1749 |
Poland
|
1 | |
| Kostowski, Ireneus | 1873 |
Germany
|
10 | |
| Kostre, Margarita | 1858 |
Germany
|
11 | |
| Kostrikina, Anna | 2161 | WFM |
Russian Federation
|
54 |
| Kostro, Jerzy | 2305 | IM |
Poland
|
547 |
| Kostromin, Mikhail | 2306 | IM |
Israel
|
60 |
| Kostrov, Andrei | 2259 |
Russian Federation
|
12 |
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