David Webster Flanagan (January 9, 1832 – May 5, 1924) was a Republican state senator in Texas.

[1] His father, James Winright Flanagan, served as Lieutenant Governor and U.S.

A Unionist before the American Civil War, he nevertheless served in the Confederate Army.

[5] Hill High School was constructed on land that was once part of his estate.

He opposed Governor Edmund Jackson Davis' state police initiatives.