OVL may refer to:

• OVL (file format)
• Lobaev Sniper Rifle
• Overlay (programming)
• Open Verification Library

• De Cleyre
• Declezville, California
• Declic
• Declic et des claques
• Declic Images
• Declic-Images
• Declination unit
• Declinax
• Decline and abolition of the poor law system
• Decline and abolition of the Poor Law system
• Decline and end of the Cucuteni-Trypillian culture
• Decline and end of the Cucuteni–Trypillia culture
• Decline and Fall (disambiguation)
• Decline and fall of Pedro II of Brazil
• Decline and fall of rome
• Decline and fall of the Byzantine empire
• Decline bench press
• Declined flank
• Declined to state
• Decline in the Portuguese Language
• Decline of Christianity in the United Kingdom
• Decline of civilization
• Decline of classical polytheism
• Decline of Hellenistic paganism
• Decline of Hellenistic polytheism