5756 Wassenbergh, provisional designation 6034 P-L, is a Rafita asteroid from the central regions of the asteroid belt, approximately 4 kilometers (2.5 miles) in diameter. It was discovered on 24 September 1960, by Dutch astronomer couple Ingrid and Cornelis van Houten on photographic plates taken by Dutch–American astronomer Tom Gehrels at the Palomar Observatory in California, United States. The asteroid was named after Dutch professor of law, Henri Wassenbergh.