Boonchu Ruangkit (born 12 May 1956) is a Thai professional golfer who plays on the Champions Tour.

As a young man, Boonchu tried for a career in kick boxing, but he gave it up after being knocked out cold in his third bout.

He was the runner-up on the Asian Tour Order of Merit in 1995 and also made the top ten in 1998 and 2004.

In the latter year he won the Thailand Open for the second time in his career at the age of 47.

In 2010, he joined the European Senior Tour and won four events (including three straight) and the Order of Merit.