| Athlete | Country | Sports | Date of birth |
|---|---|---|---|
| Daniel Xavier | ARC | 31 August 1982 | |
| Danilo Xavier | ATH | 9 January 1986 | |
| Eliomara Xavier | ATH | 3 September 1973 | |
| Francis Xavier | ATH | ||
| Francisca Xavier | ATH | 1959 | |
| Isabela Xavier | ARC | 1980 | |
| Isaias Xavier | ATH | 1 March 1965 | |
| Jeffrey Xavier | BAS | 7 September 1985 | |
| Johnson Xavier | ROW | ||
| Karen Xavier | SAI | 1963 | |
| Marcia Xavier | ATH | ||
| Marco Xavier | FEN | 16 June 1987 | |
| Mariam Xavier | BOX | ||
| Rizki Xavier | FTS | 15 January 1999 | |
| Sebastian Xavier | SWI | 10 February 1970 | |
| Silvio Xavier | ATH | 19 February 1975 | |
| Stéphanie Xavier | ATH | 22 June 1978 | |
| Stephen Xavier | ATH | ||
| Thaís Xavier | SWI | 1996 | |
| Pyari Xaxa | FTB | 18 May 1997 | |
| Sandong Xayakoummane | TKW | ||
| Bangon Xayalath | SPK | ||
| Chittakon Xayasan | JUD | ||
| Vatthana Xayasan | KTE | 20 July 2000 | |
| Thongnin Xayaseng | BOX | 2002 | |
| Koy Xayavong | SPK | 13 September 1991 | |
| Phonevilay Xaykaexeng | TKW | ||
| Souknilun Xaykongsa | SPK | 3 May 2006 | |
| Paylor Xaypao | MTI | ||
| Somchanh Xaysommy | SHO | 1 May 1983 | |
| Aounkham Xaysongkham | SPK | 5 December 2004 | |
| Hongkham Xayyalath | SHO | 18 February 1989 | |
| Sinachone Xayyasuk | WRE | ||
| Khamlar Xayyavong | SHO | 30 December 1987 | |
| Phonkeo Xayyavong | TKW | ||
| Elena Xenaki | WAP | 5 July 1997 | |
| Antonis Xenakis | WAP | ||
| Jacques Xeniatre | ATH | 12 March 1987 | |
| Charidimos Xenidakis | ATH | 8 February 2000 | |
| Timofei Xenidis | BWR/WRE | 11 June 1992 | |
| Jean-Chrys Xenie | FTB | 13 March 1987 | |
| Emilios Xenophontos | ATH | 27 November 1986 | |
| Philippos Xenophontos | ASK | 17 October 1953 | |
| Christos-Stefanos Xenos | KTE | 21 March 2000 | |
| Dionysios Xenos | KTE | 5 July 1995 | |
| Georgina Xenou | KTE | 10 June 1997 | |
| Mersi Xep Max | 5 July 2010 | ||
| Andrei Xepkin | HAN | 1 May 1965 | |
| Binita Xess | HOK | 3 July 1990 | |
| Nilam Xess | HOK | ||
| Xexa | HAN | 24 February 1964 | |
| Rose Xeyi | ATH | 16 March 2001 | |
| Ruslan Xeyirov | BOX | 7 January 1976 | |
| Didier Xhaet | ASK | 9 September 1955 | |
| Albin Xhafolli | HAN | 1 November 1998 | |
| Julia Xhako | SWI | 18 January 2009 | |
| Dasar Xhambazi | SWI | 30 March 2002 | |
| Ilir Xhani | ATH | 16 April 1970 | |
| Vivian Xhemollari | SWI | 16 September 2006 | |
| Pano Xhixho | OWS | 1969 | |
| Mihlali Xhotyeni | ATH | 14 April 2003 | |
| Xi | JUD | ||
| Xi Aihua | ROW | 27 January 1982 | |
| Xi Cheng Qing | WSU | ||
| Xi Chunrong | SSK | ||
| Xi Dongxue | SSK | 17 January 1999 | |
| Xi Enting | TTN | 3 January 1946 | |
| Xi Kailin | SBL | 23 May 1995 | |
| Xi Ligang | GAC | ||
| Xi Luozhuoma | WRE | 24 October 1987 | |
| Xi Minchi | TTN | ||
| Xi Qiuhong | ATH | 4 September 1984 | |
| Xi Ricuo | 9 August 2001 | ||
| Xi Shangxue | ATH | 27 January 1989 | |
| Xi Xi | VOL | 14 March 1988 | |
| Xi Xiayun | HOK | 29 July 1992 | |
| Xi Yuefeng | AER | 6 January 1994 | |
| Xi Ziyue | WRE | ||
| Xia Bingqing | DIV | 18 January 2001 | |
| Cheng Xia | TTN | 21 February 1982 | |
| Xia Chenxiao | DIV | ||
| Xia Chenying | SWI | ||
| Xia Fengyuan | ATH | 27 April 1975 | |
| Xia Fujie | SWI | 23 June 1970 | |
| Xia Huan | BDM | 30 January 1992 | |
| Xia Jianmin | ROW | ||
| Xia Jiaping | TEN | 1 March 1969 | |
| Xia Jingyun | BDM | ||
| Xia Keke | ROW | 20 January 1997 | |
| Xia Li | FSK | ||
| Xia Lina | ASK | 26 October 1987 | |
| Xia Lingjie | BOX | 7 July 1991 | |
| Xia Liu | WSU | 12 March 1995 | |
| Xia Min | FEN | 15 January 1987 | |
| Xia Qi | SHO | 9 June 1999 | |
| Xia Qun | WAP | ||
| Xia Runtao | VOL | 18 October 1995 | |
| Xia Shichao | SWI | ||
| Xia Shiying | DRA | 21 March 1997 | |
| Xia Siyu | SHO | 8 January 2003 | |
| Xia Tingting | KTE | ||
| Xia Wan | CCS | 9 April 1981 | |
| Xia Wei | SHO | 28 December 1976 | |
| Xia Xianghai | ATH | 17 August 1971 | |
| Xia Xiaolin | WLT | 13 January 1971 | |
| Xia Xinyi | BVO | 14 January 1997 | |
| Xia Xuanze | BDM | 5 January 1979 | |
| Xia Ye | SWA | 15 June 1980 | |
| Xia Yizheng | TTN | 7 January 1993 | |
| Xia Youlian | 4 August 1993 | ||
| Xia Yuhua | DIV | 20 January 1993 | |
| Xia Yuting | ATH | 19 May 2007 | |
| Xia Yuting | BDM | 29 May 2000 | |
| Xia Yuyu | ATH | 1 March 1998 | |
| Xia Zhenkun | ATH | 29 September 1997 | |
| Xia Zhimeng | GAC | 17 February 1995 | |
| Xiali | FTB | ||
| Xian | JUD | ||
| Xian Bangdi | CAN | 11 August 1976 | |
| Xian Bangxing | CAN | ||
| Xian Dongmei | JUD | 15 September 1975 | |
| Xian Liqing | BAS | ||
| Yi Fang Xian | TTN | 20 August 1977 | |
| Xiang Binxuan | SWA | 16 November 2001 | |
| Xiang Dongwen | BAS | ||
| Xiang Fei | HOK | ||
| Xiang Fenglan | WLT | 6 September 1973 | |
| Xiang Hengqin | FTB | 15 July 1947 | |
| Xiang Jingjing | CAN | ||
| Xiang Liande | WAP | ||
| Xiang Lingzhi | GAC | 13 April 2000 | |
| Xiang Linxiang | WLT | 14 March 2004 | |
| Xiang Lyu | TTN | 9 August 1996 | |
| Xiang Peng | TTN | 7 March 2003 | |
| Xiang Qizhang | TKW | 28 April 2004 | |
| Xiang Shulin | WLT | 27 August 1999 | |
| Xiang Yanmei | WLT | 13 June 1992 | |
| Xiang Yixuan | FEN | 19 February 1996 | |
| Xiang Yu | GYM | ||
| Xiang Yunan | SWA | 1999 | |
| Xiang Zeng | ATH | 2008 | |
| Xiang Zhichao | BK3 | ||
| Xiao Aihua | FEN | 16 March 1971 | |
| Angel Xiao | FEN | 7 November 2007 | |
| Xiao Ao | WLT | 11 August 2008 | |
| Xiao Chenming | TKW | 8 April 1999 | |
| Xiao Chun | WSU | ||
| Xiao Chunhua | WLT | ||
| Xiao Deqiang | JUD | ||
| Xiao Di | WRE | 14 May 1991 | |
| Xiao Hailiang | DIV | 24 January 1977 | |
| Xiao Hailiang | BK3 | 22 June 1995 | |
| Han Xiao | TTN | 12 September 1986 | |
| Xiao Han | STK | 7 September 1994 | |
| Xiao Heng | ATH | 14 July 2005 | |
| Xiao Hongfan | ATH | 6 January 1983 | |
| Xiao Hongyan | ATH | 26 January 1965 | |
| Xiao Hongyu | WLT | 5 August 1991 | |
| Xiao Huinin | ATH | 1 March 1992 | |
| Xiao Huixan | GAC | ||
| Huiying Xiao | WLT | 25 April 1995 | |
| Xiao Jian | FEN | 24 March 1974 | |
| Xiao Jiangang | WLT | 12 November 1972 | |
| Xiao Jiaqi | FTB | 22 April 2007 | |
| Xiao Jiaruixuan | SHO | 4 June 2002 | |
| Xiao Jieping | ATH | 14 November 1942 | |
| Xiao Jinyu | TMP | 30 August 1995 | |
| Xiao Jun | JUD | 25 May 1983 | |
| Xiao Jun | SHO | 31 August 1972 | |
| Xiao Junfeng | GYM | 12 July 1979 | |
| Xiao Kangjun | GYM | 1992 | |
| Xiao Lei | SWI | 30 April 1995 | |
| Xiao Lingxi | SWI | 1988 | |
| Xiao Luxi | BDM | 19 July 1982 | |
| Maia Xiao | RGY | 2006 | |
| María Xiao | TTN | 19 May 1994 | |
| Xiao Min | SWI | ||
| Xiao Mingchen | WRE | ||
| Xiao Minghua | WLT | 10 September 1988 | |
| Xiao Minglin | WLT | 3 October 1964 | |
| Xiao Mingxin | RGY | 4 April 2001 | |
| Xiao Ningtong | HAN | 6 June 1996 | |
| Xiao Qin | GYM | 12 January 1985 | |
| Ruibo Xiao | FEN | 16 September 2003 | |
| Xiao Ruoteng | GYM | 30 January 1996 | |
| Xiao Sha | GYM | 15 June 1992 | |
| Xiao Shunan | TKW | ||
| Xiao Wu | SHO | 17 February 1983 | |
| Xiao Xia | ATH | 6 June 1991 | |
| Xiao Xiaobang | WSU | ||
| Xiao Xiuping | VOL | ||
| Xiao Ya-Xin | TEN | ||
| Xiao Yang | ROW | 16 September 2000 | |
| Xiao Yanha | ATH | ||
| Xiao Yanjuan | DIV | ||
| Xiao Yanling | ATH | 27 March 1968 | |
| Xiao Yanning | SWA | 23 February 1998 | |
| Xiao Yanwen | VOL | 29 May 1988 | |
| Xiao Yehua | ATH | 6 November 1971 | |
| Xiao Yiming | RGY | 21 January 1988 |