State Highway 347 (SH 347) is a Texas state highway that runs northwest from Port Arthur to the southern edge of Beaumont.

It was designated on November 25, 1942 along the old route of US 69.

The highway heads northwest, crossing SH 73, Spur 136 and FM 365.

SH 347 then enters Nederland and has a junction with FM 366.

Continuing northwest, the highway enters Beaumont and ends at US 69/US 96/US 287 in the southern end of the city at Spur 380 ( Martin Luther King Jr. Parkway) The entire route is in Jefferson County.