The comedy writer and director said she welcomed a son, named Spencer, on September 3.
She had not previously revealed she was pregnant.
.@mindykaling joins @StephenAtHome on #LSSC tonight and she has the best kind of news:
👶 news. pic.twitter.com/xAtNJClO1H— The Late Show (@colbertlateshow) October 9, 2020
Kaling, 41, shared the news during an appearance on The Late Show With Stephen Colbert and said: “I’m telling it for the first time, it feels strange but I gave birth to a baby boy on September 3.”
She added: “This is news to a lot of people, it’s true.”
Kaling already has a two-year-old daughter named Katherine. Kaling has never shared a picture of her daughter’s face or the identity of her biological father, saying it was important to maintain some privacy.
However, she has revealed her former The Office co-star BJ Novak is Katherine’s godfather.
“The truth is that BJ is so much more like family now than a platonic friend,” Kaling told Good Housekeeping. “He’s the godfather to my daughter, he comes over like once a week. Sometimes he’ll come over just to hang out with her.”
Last year Kaling wrote and starred in the comedy Late Night, appearing alongside Dame Emma Thompson.
Her Netflix coming-of-age comedy-drama Never Have I Ever arrived in May to critical acclaim.