Steven Nash Jackson (born March 15, 1982) is an American former Major League Baseball pitcher who played for the Pittsburgh Pirates in 2009 and 2010.

He was selected by the Tampa Bay Devil Rays in the 38th round of the 2000 MLB Draft, but chose to attend Clemson University instead.

He spent the 2005 season with the High-A South Bend Silver Hawks in the Midwest League, pitching to a 5.33 ERA in 28 starts.

[9][10] On January 9, 2007, he was traded by the Diamondbacks to the New York Yankees (along with Ross Ohlendorf, Luis Vizcaíno and Alberto Gonzalez) for Randy Johnson.

He again pitched in the Arizona Fall League, this time for the Peoria Javelinas, allowing 10 runs on 21 hits in just 16 inning of work out of the bullpen.

[17] He made his Major League debut for the Pirates on June 1, 2009, against the New York Mets, working one scoreless inning of relief.