The world chess champion was an informal title from the mid-19th century to the mid-20th century. The Fédération Internationale des Échecs (FIDE) held the first official World Chess Championship in 1948.
Player
Year
Men
Adolf Anderssen (Germany)
1859-1866
Wilhelm Steinitz (Bohemia)
1866-1894
Emanuel Lasker (Germany)
1894-1921
José Raúl Capablanca (Cuba)
1921-1927
Alexander Alekhine1 (Russian-born)
1927-1935
Max Euwe (The Netherlands)
1935-1937
Alexander Alekhine1 (Russian-born)
1937-1946
Mikhail Botvinnik (USSR)
1948-1957
Vassily Smyslov (USSR)
1957-1958
Mikhail Botvinnik (USSR)
1958-1960
Mikhail Tal (USSR)
1960-1961
Mikhail Botvinnik (USSR)
1961-1963
Tigran Petrosian (USSR)
1963-1969
Boris Spassky (USSR)
1969-1972
Bobby Fischer (United States)
1972-1975
Anatoly Karpov (USSR)
1975-1985
Garry Kasparov2, 3, 6 (USSR/Russia)
1985-2000
Anatoly Karpov4 (Russia)
1993-1999
Aleksandr Khalifman4 (Russia)
1999-2000
Viswanathan Anand4 (India)
2000-2001
Ruslan Ponomariov4 (Ukraine)
2001-2004
Rustam Kasimdzhanov4 (Uzbekistan)
2004-2005
Veselin Topalov (Bulgaria)
2005-2006
Vladimir Kramnik (Russia)
2006-2007
Viswanathan Anand (India)
2007-
Women5
Vera Menchik (USSR)
1927-1944
Ludmilla Rudenko (USSR)
1950-1953
Elizaveta Bykova (USSR)
1953-1956
Olga Rubtsova (USSR)
1956-1958
Elizaveta Bykova (USSR)
1958-1962
Nona Gaprindashvili (USSR)
1962-1978
Maya Chiburdanidze (USSR)
1978-1991
Xie Jun (China)
1991-1996
Zsuzsa Polgár (Hungary)
1996-1999
Xie Jun (China)
1999-2001
Zhu Chen (China)
2001-2004
Antoaneta Stefanova (Bulgaria)
2004-2006
Xu Yuhua (China)
2006-2008
Alexandra Kosteniuk (Russia)
2008-
1 Alekhine was a French citizen when he became world champion. He held the title when he died in 1946.
2 In 1993 Kasparov split with the Fédération Internationale des Échecs (FIDE) to start his own organization but remained the world's top-ranked player.
3 Represented the USSR until its dissolution in 1991.
4 FIDE champion.
5 All women's champions determined by FIDE.
6 In 2000 Kasparov competed in the Classical World Championship and was defeated by his pupil, Vladimir Kramnik. Kasparov retired from competitive chess in 2005.