Gustaf Harald Arbin (ne Andersson, August 4, 1867 – July 31, 1944) was a Swedish diver who competed in the 1908 Summer Olympics and in the 1912 Summer Olympics.
He was born and died in Gothenburg.
In 1908 he was eliminated in the semi-finals of the 10 metre platform event.
Four years later he finished sixth in the 10 metre platform competition of the 1912 Games.