Ailsa Craig is a medium-sized red variety of tomato. It was first bred in 1908 by nurseryman Alan Balch of Girvan, Scotland as a cross between the varieties "Balch's Fillbasket" and "Carter's Sunrise", and was introduced to market by Alexander and Brown in 1912. It was named after the island Ailsa Craig, visible from Balch's nursery in Girvan.