Martins Creek (a.k.a. Martin Creek) is creek that is a tributary of Goose Creek in Clay County, Kentucky that used to have a Martins Creek post office. It is 4.5 miles (7.2 km) long and named for early settler Salathiel Martin.

The Creek is 9.5 miles (15.3 km) from Manchester at altitude 830 feet (250 m) above sea level.

Its eponymous postoffice was established on July 10, 1876, by postmasters Marshall Corum and George D. Mahan, and closed on September 20, 1878. It was located just downstream on Goose Creek from the mouth of Martins.

The Wages postoffice was established on February 6, 1884, by William Wages, and closed in November 1885. It was located 3 miles (4.8 km) upstream along the creek from its mouth. His first choice of name had actually been Martins Creek.

In 1918, Silas Wages had a mine 0.25 miles (0.40 km) upstream on Moses Branch.

The Plank postoffice was established on December 7, 1906, by postmaster George W. Walker, and closed in September 1992. It was located 2 miles (3.2 km) upstream along the creek from its mouth. It served several lumber mills and the store of J. B. Walker, and local oral history is that its name was taken from a plank of wood propped against the wall of one of the aforementioned mills, a lumbermill practice that was used to boast that it had sawn the longest plank in the area.

J. B. Walker's mine was 0.5 miles (0.80 km) upstream on Moses Branch, and his house was 2 miles (3.2 km) upstream on Martin Creek itself.

• List of rivers of Kentucky