Keith Allen Butler (born January 30, 1989) is an American former professional baseball pitcher.

[2] At Wabash he made 20 appearances for the "Warriors", posting a 2.72 ERA with 59 strikeouts and an overall record of 6–2 in 43 innings of work on the mound.

He started the season with the Quad Cities River Bandits, pitching 15 1/3 innings in 12 games allowing just two runs while striking out 16 batters before advancing to the Palm Beach Cardinals.

[5] At Palm Beach he shut down opposing offenses, striking out 52 batters and posting a 1.25 ERA as he picked up 17 saves.

[2] He made his major league debut on June 1 against the San Francisco Giants at Busch Stadium, giving up one hit, one walk, and striking out one in a single inning of work.