Stewart Hoffman Appleby (born May 17, 1890) was a Republican politician who represented New Jersey in the United States House of Representatives. Serving as a member of Congress from New Jersey’s 3rd Congressional District, he held office as a Representative during the mid-1920s. His tenure in the House placed him among the historical members of Congress from New Jersey.

Appleby’s service in Congress began on December 7, 1925, and concluded on March 4, 1927, encompassing a single term. During this period, he served as a Republican Representative for New Jersey’s 3rd District. While specific committee assignments, legislative initiatives, and post-congressional activities are not detailed in the available record, his term from 1925 to 1927 situates him within the broader context of early twentieth-century American legislative history.