Garrick Rennie Porteous (born 17 January 1990) is an English professional golfer who won The Amateur Championship in 2013 where he defeated Toni Hakula 6 and 5.

Porteous played on the golf team at the University of Tennessee where he earned all-conference and all-region honors.

[2] Porteous won the 2013 Amateur Championship where he defeated Toni Hakula, 6 & 5.

Since turning professional, Porteous has mainly played on the Challenge Tour.

His previous best finish had been joint runner-up in the 2016 Red Sea Egyptian Challenge.