Juan Roberto Agosto Gonzalez (born February 23, 1958) is a Puerto Rican former relief pitcher who played for the Chicago White Sox, Minnesota Twins, Houston Astros, St. Louis Cardinals and the Seattle Mariners of Major League Baseball (MLB).

Juan Agosto was originally signed by the Boston Red Sox as an amateur free agent in 1974 and released in 1978.

[1] He was with the White Sox when they won the 1983 American League West, and briefly pitched for them in the ALCS.

[6] In 1988, Agosto led the major leagues with a ten-game winning streak, the longest in Astros history at the time.

[13] He attempted to earn a bullpen slot with the Kansas City Royals in 1997, but he was cut during spring training after posting a 7.11 ERA.