Ronald S. Welty is an American former musician and the former drummer for the punk rock band the Offspring, where he was a member from 1987 to 2003 and served as the band's longest-serving drummer. After the Offspring, Welty formed Steady Ground.

The Offspring is an American punk rock band from Garden Grove, California, formed in 1984. Originally formed under the name Manic Subsidal, the band's current lineup consists of lead vocalist and rhythm guitarist Bryan "Dexter" Holland, lead guitarist Kevin "Noodles" Wasserman, bassist Todd Morse, multi-instrumentalist Jonah Nimoy and drummer Brandon Pertzborn. The Offspring is often credited for reviving mainstream interest in punk rock in the 1990s. During their 39-year career, the Offspring has released 10 studio albums and sold more than 40 million records, making them one of the best-selling punk rock bands in history.