José Núñez Jiménez (born January 13, 1960) is a former Major League Baseball pitcher.

He was signed by the Kansas City Royals as a free agent in 1983 and pitched in Major League Baseball for the Toronto Blue Jays (1987-1989) and Chicago Cubs (1990).

Núñez is currently a pitching coach in the Milwaukee Brewers minor league system.

After leaving the major leagues, Núñez enjoyed a long and prosperous career in Asia, playing for the Uni-President Lions (1993–1995), Fukuoka Daiei Hawks (1996–1997), Taichung Agan (1998) and Hanwha Eagles (2001).

He shares the Taiwanese professional baseball record of winning the most games in a single season (22 wins in 1993), along with Chen Yi-Hsin.