Heng On may refer to:

• Heng On Estate, a public housing estate in Ma On Shan, Hong Kong
• Heng On station, an MTR rapid transit station adjacent to the estate

• Bulgaroctonus
• Bulgarophiles
• Bulgarophygon
• Bulgaro-Serbian War
• Bulgaro-Serbian Wars
• Bulgar peoples
• Bulgarrenault
• Bulgar Renault
• Bulgarski
• Bulgarskie Centrum
• Bulgartransgaz
• Bulgartransgaz EAD
• Bulgar wheat
• Bulge chasing
• Bulge head
• Bulger case
• Bulger (disambiguation)
• Bulger Geyser
• Bulger Hall
• Bulger, Pennsylvania
• Bulgers Corners, Ontario
• Bulghan (disambiguation)
• Bulghari
• Bulghar language
• Bulgheria