State Highway 234 (SH 234) is a short state highway connecting Edroy and Odem in San Patricio County, Texas.

SH 234 begins in Edroy at I-37 southbound's exit #22; the roadway north of this interchange is designated FM 796. The route travels south into central Edroy before turning to the east, where it intersects the frontage road of northbound I-37's exit #22. The highway continues to the east before turning to the southeast, becoming Main Street in Odem. The SH 234 designation ends at US 77; the roadway beyond this intersection is designated FM 631.

The route was designated between 1936 and 1938 along its current route.

The entire route is in San Patricio County.