Seward is a city in Kenai Peninsula Borough in the U.S. state of Alaska. As of the 2000 census, the population of the city is 2,830.

It was named after William H. Seward, early member of the United States Republican Party, United States Secretary of State under Abraham Lincoln. As Secretary of State, he fought for the U.S. purchase of Alaska which he finally negotiated to acquire from Russia for $7,200,000 on March 30, 1867. This translated into approximately 2.5 cents per acre ($6.18/km²) for 586,400 square miles (1,519,000 km²) of territory, three times the size of Texas. The purchase of this frontier land ("Seward's Icebox") was mocked as "Seward's Folly" and Andrew Johnson's "polar bear garden".

The town of Seward marks the start of the Historic Iditarod Trail.