James Robert "Jim" Johnson (born June 27, 1983, in Johnson City, New York) is a Major League Baseball closing pitcher for the Baltimore Orioles.

Johnson was born in Johnson City, New York. He was raised in Endicott, New York and graduated from Union Endicott High School in 2001 along with Chris Riley, when he was signed by Orioles scout Jim Howard. His nickname is "J.J."

He began the 2008 season in the Triple-A Norfolk Tides starting rotation, but was called up to the Orioles on April 12. Pitching middle and late relief, he ran up 18 consecutive scoreless innings before giving up a 10th inning run to Oakland on May 5.