Blackjack is an unincorporated community in Cherokee County, Texas, United States.

Robert Graves Stadler settled here in the 1840s from South Carolina and was also a Texas Revolution veteran.

The community grew when John W. Gray and Tom Upchurch opened a store here in 1916.

Blackjack had two stores, a cotton gin, a garage, a church, and 100 residents at its zenith.

After the second World War, it joined the Troup Independent School District.