Ivar Stukolkin (born August 13, 1960 in Tallinn) is a retired Estonian swimmer. He is an Olympic champion in swimming.
Besides two Olympic medals Stukolkin won a silver medal at the 1982 World Championships (4×200 m freestyle relay). He has been Soviet Union champion once in 1978 and has won sixteen titles in Estonian SSR.
Stukolkin has set 32 records in Estonian SSR and he currently holds them in 400 and 1500 metre freestyle swimming. These records were set in a 50-metre swimming pool.