| Name | ELO | Title | Federation | Games |
| Xalabarder Coca, Eudaldo | 1942 |
 Spain
|
8 | |
| Xanco Compains, Joan | 2125 |
Spain
|
11 | |
| Xander, Karl | 2006 |
 Germany
|
109 | |
| Xandri Rosell, Miquel | 1615 |
Spain
|
6 | |
| Xanthopoulos, Alexandros | 1896 |
 Greece
|
42 | |
| Xanthopoulos, Vasilios | 1883 |
Greece
|
1 | |
| Xanthos, Constantin | 2046 |
 United States
|
20 | |
| Xapelli Aymerich, Josep | 1868 |
Spain
|
12 | |
| Xausa, Flavio | 2017 |
 Italy
|
7 | |
| Xavier, Nazareno | 2122 |
 Brazil
|
8 | |
| Xaxiris, E. | 1968 |
Greece
|
16 | |
| Xenakis, Nikolaos | 1768 |
Greece
|
6 | |
| Xheladini, Fikri | 2073 |
 France
|
2 | |
| Xheladini, Mahmut | 2112 | FM | 161 | |
| Xhembulla, Aleksander | 2154 | CM |
 Albania
|
1 |
| Xi, Qi | 2217 |
 China
|
8 | |
| Xia, Angel | 2071 |
 Canada
|
23 | |
| Xia, Brandon | 2024 | CM |
United States
|
5 |
| Xia, Jie | 2244 | FM |
Italy
|
131 |
| Xia, Yiyun | 2202 |
China
|
11 | |
| Xia, Yusheng | 2073 |
United States
|
9 | |
| Xiang, Zeyu | 2444 | IM |
China
|
198 |
| Xiao, Junyuan | 2077 |
China
|
2 | |
| Xiao, Tong(QD) | 2484 |
China
|
53 | |
| Xiao, Yiyi | 1566 | WGM |
China
|
331 |
| Xie, Brandon | 1971 |
United States
|
7 | |
| Xie, Bryan | 2275 | FM |
United States
|
106 |
| Xie, Felix | 2291 | FM |
 New Zealand
|
102 |
| Xie, Jianjun | 2384 | FM |
China
|
70 |
| Xie, Kaifan | 2393 | CM |
China
|
48 |
| Xie, Ken | 2110 |
 Australia
|
68 | |
| Xilogiannis, Dimitrios | 2110 |
Greece
|
1 | |
| Ximitidou, Maria | 1847 |
Greece
|
17 |
| Name | ELO | Title | Federation | Games |
| Ximitidou, Sofia | 1857 |
Greece
|
17 | |
| Xiong, Ferdinand | 2208 |
Germany
|
22 | |
| Xiong, Jeffery | 2646 | GM |
United States
|
873 |
| Xiong, Jerry | 2118 |
Canada
|
30 | |
| Xiong, Sonja | 1918 |
Canada
|
16 | |
| Xiropoulou, Alexandra | 1406 |
Greece
|
5 | |
| Xiu, Deshun | 2510 | GM |
China
|
361 |
| Xu, Arthur | 2129 | FM |
United States
|
25 |
| Xu, Daniel | 2212 | FM |
Canada
|
17 |
| Xu, David | 1552 |
New Zealand
|
20 | |
| Xu, Eddie | 1965 |
Canada
|
3 | |
| Xu, Grant | 2279 | FM |
United States
|
54 |
| Xu, Jialun | 2197 |
China
|
4 | |
| Xu, Kevin | 1992 |
United States
|
1 | |
| Xu, Leo | 1739 |
France
|
1 | |
| Xu, Minghui | 2383 |
China
|
168 | |
| Xu, Runya | 2089 |
United States
|
4 | |
| Xu, Ruoying | 1990 |
Canada
|
12 | |
| Xu, William | 1492 |
Canada
|
33 | |
| Xu, Xiangyu | 2626 | GM |
China
|
610 |
| Xu, Xianliang | 2470 | IM |
Germany
|
81 |
| Xu, Yang | 2150 |
China
|
20 | |
| Xu, Yi | 2495 | GM |
China
|
519 |
| Xu, Yinglun | 2515 | GM |
China
|
543 |
| Xu, Yining | 2337 |
China
|
18 | |
| Xu, Yuhao | 2057 |
United States
|
1 | |
| Xu, Yuze | 1965 |
China
|
32 | |
| Xu, Zhihang | 2511 | IM |
China
|
234 |
| Xue, Haowen | 2452 |
China
|
90 | |
| Xue, Robert | 1983 |
United States
|
1 | |
| Xuereb, Joe | 2205 | CM |
 Malta
|
14 |
| Xylogiannopoulos, Antonios | 2247 |
Greece
|
84 |
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