Sung-Wei Tseng (Chinese: 增菘瑋; born December 28, 1984) is a Taiwanese former professional baseball player.

A pitcher, he played minor league baseball in the United States for the Cleveland Indians organization.

In 2008, he played for the Akron Aeros and Kinston Indians.

Tseng also played for the Chinese Taipei baseball team in the 2009 World Baseball Classic.

This biographical article relating to a Taiwanese baseball figure is a stub.