Pablo Sierra (born 13 May 1969, also known as Pablo Sierra Hermoso) was a Spanish long-distance runner and a team silver medalist in the 1995 IAAF World Half Marathon Championships. While in high school in California, Sierra was the high school champion in the 10K. At college in University of Mississippi, he was the 1992 individual Southeastern Conference champion in cross country running, and the fourth-place finisher in the 1993 NCAA Division I Outdoor Track and Field Championships in the 5000 meters.