Yochanan Afek is an Israeli chess player, composer, trainer and arbiter. He described pioneering Israeli master Moshe Czerniak as “my teacher”. He is the only person to possess international titles at five different facets of chess, being an International Master, International Grandmaster of chess composition, International Arbiter, FIDE master in problem solving (2005), and International Judge for chess compositions. In 2002 he won Paris City Chess Championship . Afek won the prestigious Art chess tournament in Amsterdam organized by the foundation for aristocratic art and culture where various grandmasters participated.

Nana Alexandria is a Georgian chess player. A three-time Soviet women's champion, she was the challenger in two matches for the Women's World Chess Championship.

Yuri Lvovich Averbakh is a Russian chess player and author. He is the oldest living chess grandmaster. He was chairman of the USSR Chess Federation from 1973 to 1978.

Batchimeg Tuvshintugs is a Mongolian chess player holding the titles of International Master (IM) and Woman Grandmaster (WGM). In 2016, Batchimeg was awarded the title State Honored Athlete of Mongolia.

Shohreh Bayat is an Iranian chess referee based in England. She was chief arbiter of the Women's World Chess Championship 2020. Bayat is an International Arbiter for FIDE. She was awarded a International Women of Courage Award in 2021.

Florencio Campomanes was a Filipino political scientist, chess player, and chess organizer.

István Csom is a Hungarian chess Grandmaster and International Arbiter. FIDE awarded him the International Master title in 1967 and the Grandmaster title in 1973. He was Hungarian Champion in 1972 and 1973 (jointly). His tournament victories include Olot 1973, Cleveland 1975, Olot 1975, Pula Zonal 1975, Berlin 1979, Copenhagen 1983, Järvenpää 1985 and Delhi 1987.

Jens Evald Enevoldsen-Elsing was a Danish chess master born in Copenhagen.

Andrzej Filipowicz is Polish chess International Master (IM) (1975), FIDE International Arbiter (1984), FIDE Honorary Member (2006).

Salomon Mikhailovich Flohr was a Czechoslovak and Soviet chess player and writer. He was among the first recipients of the title International Grandmaster from FIDE in 1950. Flohr dominated many tournaments of the pre-World War II years, and by the late 1930s was considered a contender for the World Championship. However, his patient, positional style was overtaken by the sharper, more tactical methods of the younger Soviet echelon after World War II.

Geurt Gijssen is a Dutch chess International Arbiter (1979), FIDE Honorary Member (2013).

Svetozar Gligorić was a Serbian and Yugoslav chess grandmaster and musician. He won the championship of Yugoslavia a record twelve times, and is considered the best player ever from Serbia. In 1958, he was declared the best athlete of Yugoslavia.

Harry Golombek OBE was a British chess player, chess author, and wartime codebreaker. He was three times British chess champion, in 1947, 1949, and 1955 and finished second in 1948.

Tamara Golovey is a Chess Master, Chess International Arbiter and the Merited Coach of the Republic of Belarus. Her United States Chess Federation rating (USCF) is 2322.

Efstratios Grivas is a Greek chess Grandmaster, FIDE Senior Trainer, International Arbiter, and International Organizer.

Mikhail Gurevich is a Soviet-born Belgian chess player. He was a top ten ranked player from 1989 to 1991. Gurevich became an International Grandmaster in 1986, and is currently an FIDE arbiter and senior trainer.

Faiq Hasanov is an Azerbaijani chess International Arbiter (1980), coach, television presenter, author and vice-president of Azerbaijan Chess Federation.

Borislav Ivkov is a Serbian chess Grandmaster. He was a World championship candidate in 1965, and played in four more Interzonal tournaments, in 1967, 1970, 1973, and 1979.

Nonna M. Karakashyan was the first Armenian woman awarded with FIDE title of International Arbiter (1992). She is a chess player and coach. Her last name may also be spelled as Karakashian.

Tibor Károlyi is a Hungarian chess International Master, International Arbiter (1997), coach, theoretician, and author.

Isaac Kashdan was an American chess grandmaster and chess writer. He was twice U.S. Open champion. He played five times for the United States in chess Olympiads, winning a total of nine medals, and his Olympiad record is the all-time best among American players.

Johann "Hans" Joseph Kmoch was an Austrian-American chess player, chess journalist and author, for which he is best known. He was awarded the title of International Master in 1950 at its inauguration and in 1951, he also received the title of International Arbiter.

George Koltanowski was a Belgian-born American chess player, promoter, and writer. He was informally known as "Kolty". Koltanowski set the world's blindfold record on 20 September 1937, in Edinburgh, by playing 34 chess games simultaneously while blindfolded, making headline news around the world. He also set a record in 1960 for playing 56 consecutive blindfold games at ten seconds per move.

Pavel Kotsur is a chess Grandmaster (1996) and FIDE Arbiter (2009) from Kazakhstan.

Čeněk Kottnauer was a Czech British chess master, earning the title of International Master.

Nikolai Vladimirovich Krogius is a Russian Chess Grandmaster, International Arbiter (1985), psychologist, chess coach, chess administrator, and author. He won several tournament titles at Sochi and in eastern European events, and appeared in seven Soviet finals from 1958–71. His peak was in 1967 when he ranked 18th in the world for a time. He earned his doctorate in psychology, and specialized in sports psychology. He coached World Champion Boris Spassky for several years, also served as chairman of the USSR Chess Federation, and co-authored five chess books. He was the co-winner of the 1993 World Senior Chess Championship.

Hans Olav Lahlum is a Norwegian historian, crime author, chess player and organizer, and politician. He has written biographies on Oscar Torp and Haakon Lie, and a history book about all the Presidents of the United States.

Milunka Lazarević was a Serbian chess player and journalist. For many years, she was the strongest female player of Yugoslavia and became a contender for the Women's World Chess Championship.

Albéric Joseph Rodolphe Marie Robert Ghislain O'Kelly de Galway was a Belgian chess Grandmaster (1956), an International Correspondence Chess Grandmaster (1962), and the third ICCF World Champion in correspondence chess (1959–1962). He was also a chess writer.

Karel Opočenský was a Czech chess master.

Vasja Pirc was a leading Yugoslav (Slovenian) chess player. His name is most familiar to contemporary players as a strong exponent of the hypermodern defense now generally known as the Pirc Defense.

Elisabeta Polihroniade was a Romanian chess player holding the title of Woman Grandmaster (WGM), and an International Arbiter (1986). She was born in Bucharest.

Lodewijk Prins was a Dutch chess player and referee of chess competitions.

Viacheslav Vasilyevich Ragozin was a Soviet chess player, writer and editor. He was world champion in correspondence chess and held the title of Grandmaster in both over-the-board and correspondence chess.

Ludwig Rellstab was a German chess player who won the German Chess Championship in 1942 and was awarded the International Master title in 1950.

Zoltán Ribli is a Hungarian chess grandmaster and International Arbiter (1995). He was twice a World Championship Candidate and three times Hungarian Champion.

Herman Claudius van Riemsdijk is a Brazilian chess player. He was awarded the title International Master by FIDE in 1978. Van Riemsdijk was also granted the title of International Arbiter in 1981.

Peter Arsenievich Romanovsky was a Russian chess player and author. He won the Soviet Championship in 1923 and, jointly, 1927.

Gyula Sax was a Hungarian chess grandmaster and International Arbiter (1995).

Lothar Maximilian Lorenz Schmid was a German chess grandmaster. He was born in Radebeul near Dresden into a family who were the co-owners of the Karl May Press, which published the German Karl May adventure novels.

Anders Gideon Tom Ståhlberg was a Swedish chess player. He was among the inaugural recipients of the title International Grandmaster from FIDE in 1950.

Sir George Alan Thomas, 7th Baronet was a British badminton, tennis and chess player. He was twice British Chess Champion and a 21-time All-England Badminton champion. He also reached the quarterfinals of the singles and the semifinals of the men's tennis doubles at Wimbledon in 1911. Badminton's world men's team championships cup, equivalent to tennis' Davis Cup, is named Thomas Cup after him. Thomas lived most of his life in London and Godalming. He never married, so the hereditary Thomas baronetcy ended on his death.

Román Torán Albero was a Spanish chess International Master (1954), FIDE International Arbiter (1957), FIDE Vice President (1982—1990), two-times Spanish Chess Championship winner.

Zsuzsa Verőci is a Hungarian chess Woman International Master (1969) and Woman Grandmaster (1978). She has also been a FIDE International Arbiter since 1995. Her current FIDE rating is 2253 and her peak rating, from July 2003 to April 2004, was 2315. She was born February 19, 1949, in Budapest, Hungary.

Milan Vidmar was a Slovene electrical engineer, chess player, chess theorist, and writer. He was among the top dozen chess players in the world from 1910 to 1930 and in 1950, was among the inaugural recipients of the title International Grandmaster from FIDE. Vidmar was a specialist in power transformers and transmission of electric current.

Robert Graham Wade, was a New Zealand and British chess player, writer, arbiter, coach, and promoter. He was New Zealand champion three times, British champion twice, and played in seven Chess Olympiads and one Interzonal tournament. Wade held the titles of International Master and International Arbiter.

Baruch Harold Wood OBE, generally known as B. H. Wood, was an English chess player, editor and author. He was born in Ecclesall, Sheffield, England.

Daniel Abraham Yanofsky, was Canada's first chess grandmaster, an eight-time Canadian Chess Champion, a chess writer, chess arbiter, and lawyer.

Ali Nihat Yazıcı is the head of Turkish Chess Federation.

Ljubica Živković, née Jocić, was a Serbian and Yugoslav chess player who held the title of Woman International master. She was a winner of the Yugoslav Women's Chess Championship (1959).

Kira Alekseyevna Zvorykina was a Soviet chess player who spent many years living in Belarus. She was a three-time winner of the Women's Soviet Championship.