Seward \se-ward, sewa-rd\ as a boy's name is of Old English origin, and the meaning of Seward is "sea guardian; victory guardian". Earl Siward (11th-century) of Northumberland (in England) was a general of the English army. In more modern times, William Henry Seward, Secretary of State under Lincoln and Johnson, was responsible for the American purchase of Alaska from Russia. Mostly 19th century use.

Seward has 2 variant forms: Sewerd and Siward.

A baby name that sounds like Seward is Zared.