Michael Qualls and Marshawn Powell added 11 points each for the Razorbacks (14-8, 5-4 SEC), who connected on 49.1 percent of their shots from the floor, including 8-of-18 from 3-point range.
The victory was the first for Arkansas against a No. 2 team since 1999.
Leading scorer Kenny Boynton was held to just 10 points of 4-of-11 shooting for the Gators (18-3, 8-1), who were coming off a 78-64 win Saturday over then-No. 16 Mississippi.
Mike Rosario put in 15 points and Scottie Wilbekin added 14, seven rebounds and four assists for Florida.
Millions of Getty images now available for free via embed tool
Boston schools pull out free condoms over wrapping complaints