James E. Rudder State Office Building, Government building in downtown Austin, United States.

The James E. Rudder State Office Building is a five-story government office tower in downtown Austin with interior spaces marked by terrazzo and marble flooring. The rooms feature high ceilings around 18 feet that give the building a sense of spaciousness.

The structure was built in 1918 by architect Atlee B. Ayres and initially housed several state departments including the General Land Office and Department of Agriculture. It gained recognition on the National Register of Historic Places in 1998.

The building's name honors James Earl Rudder, a former Texas land commissioner and university president. Visitors today see the offices of the Texas Secretary of State, which has occupied the structure in recent decades. The five-story block sits immediately south of the old General Land Office building, placing it within a cluster of state offices in downtown Austin.

The building is at 1019 Brazos Street, immediately south of the old General Land Office building and east of the Dewitt C. Greer State Highway Building. It houses the offices of the Secretary of State. The sources do not state public access or opening hours.

The Rudder Building and the neighbouring Dewitt C. Greer State Highway Building were listed together on the National Register of Historic Places on January 7, 1998. The nomination covers both structures, which stand side by side on Brazos Street in downtown Austin.