Robert Brenaman Wrenn Jr. (born September 11, 1959) is an American golfer.

He attended Wake Forest University in Winston-Salem, North Carolina, and was an all-ACC member of the golf team in each of his four years from 1978–1981.

He played in 308 PGA Tour events between 1982 and 1998 with 15 top-10 finishes including a victory at the 1987 Buick Open.

In fact, at the time this was only one stroke off the all-time PGA Tour record in a 72-hole tournament.

PGA Tour playoff record (0–1) Note: Wrenn never played in The Open Championship CUT = missed the half-way cut "T" = tied