Lefever is a surname. Notable people with the surname include:

• Ernest W. Lefever (born 1919), American political theorist
• Daniel Myron LeFever (born 1835), American gun maker
• Jacob LeFever (born 1830), American Congressman from New York
• Joseph Lefever (born 1760), member of the United States House of Representatives
• Minard Lefever (born 1798), American architect

• Martin of Tongres
• Martin of Tours, Saint
• Martin of Troppau
• Martin of Urzedow
• Martin of Wrocimowice
• Martin O'Hagan
• Martin, Ohio
• Martin ohm
• Martin Ohm
• Martin Olav Sabo Bridge
• Martin Oliver (author)
• Martino Longhi
• Martino Longhi the Elder
• Martino Longhi the Younger
• Martin Olsen Nalum
• Martin Olson
• Martin Olsson
• Martino Martini
• Martin O'Neil
• Martin Onslow Forster
• Martin Opitz von Boberfeld
• Martinopolis
• Martin & Orloff
• Martin Orne
• Martin + Osa