Mihai ?uba (Romanian pronunciation: ['?ub?], born June 1, 1947) is a Romanian and Spanish chess player.
FIDE awarded him the International Master title in 1975 and the International Grandmaster title in 1978.
Born in Bucharest, Romania, ?uba, won the Romanian Chess Championship in 1980, 1981 and 1985.
He first came to wide attention in 1982 when he finished second, after Zoltán Ribli, at Baile Herculane.
At the 1982 Las Palmas Interzonal, he finished third, behind Ribli and former World Champion Vasily Smyslov, just missing qualification for the Candidates Matches.
?uba finished first at Dortmund 1983, and equal first at Prague 1985 and Timisoara 1987.
In August 1988, he sought political asylum in Britain, and he played for England at the 1989 European Team Chess Championship, though he started playing for Romania again in 1992.
In 2017 he switched his national federation to Spain.?uba is the author of the well-received book Dynamic Chess Strategy and of the monograph The Hedgehog.