Last name Madlock (Madlock 
) , all around the world, is a rare family name. The last name Madlock is habitual in the United States, where it is a rare surname, New Zealand, and Canada, where it is a very rare surname.
| VARIANT | COUNTRY |
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| Madlock | Canada, United Kingdom, United States, New Zealand, Spain |
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bill madlock American baseball player and coach, US (b. 1951) |
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| tony madlock American basketball player and coach (b. 1970) |
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| cameron madlock college basketball player (2008–2011) Bowling Green State; Northern Illinois |
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| ed madlock college basketball player (1992–1994) Northern Iowa |
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| calvin madlock college basketball player (1982–1983) Northwestern State |
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