Alston Callahan (born March 16, 1911 in Vicksburg, Mississippi; died October 28, 2005 in Birmingham) was an ophthalmologist and plastic surgeon, and founder of the Eye Foundation Hospital, now known as the "UAB Callahan Eye Hospital" in his honor.
Callahan was the son of Neil Callahan and his second wife, the former Effie Maud Alston.
Callahan married the former Eivor Holst.
Callahan died in 2005 and is buried at Elmwood Cemetery. His family marker includes a triple trilith of squared pillars and lintls, and bears an inscription depicting the Callahan Eye Foundation Hospital. His headstone includes insignia noting his polar expeditions.