The Doctor Foster star, 37, gave birth to her new baby son last week.
She confirmed the fantastic news after missing the Broadcasting Press Guild Awards on Friday (11 March), saying she had a "good excuse".
Suzanne and her husband Laurence Akers are "delighted" with their new addition.
In a statement to the Daily Mirror, a representative for the star said: "Suranne and Laurence were delighted to welcome their son into the world last week."
Suzanne revealed she was pregnant in January, when she arrived at the National Television Awards displaying her baby bump.
The former Coronation Street actress married Laurence in August last year after a whirlwind romance.
Hit BBC series Doctor Foster has been recommissioned for a second series and will begin filming in September, after Suranne enjoys her maternity leave.
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