Robert Griffith Houston (October 13, 1867 – January 29, 1946) was an American lawyer, publisher and politician from Georgetown, in Sussex County, Delaware.

He attended public schools in Lewes, and was the nephew of John W. Houston, who had served as U.S. Representative from Delaware between 1845 and 1851.

In 1900, President William McKinley appointed Houston collector of customs for the district of Delaware, a post he held until 1904.

In 1924, popular Republican President Calvin Coolidge was reelected and led his party to a gain of 24 seats in the House of Representatives.

He finished third behind the incumbent Republican Daniel O. Hastings, and the successful candidate, Democratic James H. Hughes.