Sumner \s(u)-mner, sum-ner\ as a boy's name is of Old English origin, and the meaning of Sumner is "one who serves a summons". Occupational name for a medieval legal official. In Geoffrey Chaucer's well-known "Canterbury Tales", a summoner is one of the pilgrims headed to Canterbury. Entrepreneur Sumner Redstone.

Similar baby names are Stoner, Miner, Munir, Muneir, Muneer, Simone, Simen, Skinner and Suman.