Andy Murray will play at the Open Sud de France in Montpellier in February.
The ATP 250 event takes place between 3 and 10 February, one week after the Australian Open.
Britain’s former world number one ended his 2018 season early in September, having only played 12 matches after returning from hip surgery in June.
He said he wanted to get “in the best shape possible for the beginning of the 2019 season” and “get back competing for the biggest tournaments”.
Murray, 31, who is expected to play at the Australian Open, confirmed last month he would play in the Marseille Open, which starts two weeks after the Montpellier event.