Ashley Trevor Roestoff (born 27 August 1963) is a South African professional golfer.

Roestoff was born in Johannesburg, and lives in Randburg with his wife, Letitia and his sons, Travis and Connor.

Roestoff joined the Sunshine Tour in 1992, and won his first title that same year at the Fish River Sun Classic.

He has found most of his success on the Winter Swing of the tour where he has collected a total of 10 tournament victories.

In addition to the Sunshine Tour, Roestoff played one season on the second tier European Challenge Tour in 2001, finishing 26th on the final standings having picked up one win, at the Tusker Kenya Open.