The UN had suspended Sharapova's role as goodwill ambassador in March after she failed a drug test, putting a hold on a nine-year partnership with the United Nations Development Programme (UNDP).
"UNDP was glad to learn that Maria Sharapova can return to the sport she loves sooner than expected and we will lift the suspension of her role as our goodwill ambassador once the reduced ban expires in April 2017," said a UNDP spokesperson.
CAS reduces Sharapova doping ban to 15 months
"We understand that Ms Sharapova will be focused on resuming her tennis career and we look forward to discussing her role and engagement with UNDP at an appropriate date."
Last month, the Russian star's 24-month ban for testing positive for meldonium was cut to 15 months by the Lausanne-based Court of Arbitration for Sport.
Sharapova, 29, had admitted using meldonium for 10 years to help treat illnesses, a heart issue and a magnesium deficiency.
Sharapova appeal verdict set for October
As a goodwill ambassador, Sharapova has been active in helping recovery efforts after the 1986 Chernobyl disaster.
The tennis sensation has made visits to Belarus and donated $100,000 to support youth projects in rural areas that suffer from the after-affects of the Chernobyl nuclear accident.
Sharapova's family fled the city of Gomel in Belarus in 1987 after the Chernobyl disaster, moving to Siberia where the tennis star was born.
The family lived in Nyagan, Siberia for two years and then moved to Sochi on the Black Sea where Sharapova took her first tennis lessons.
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