Bednarek was sent off against Manchester United by referee Mike Dean, who judged him for denying Anthony Martial an obvious goalscoring opportunity.
To many onlookers, Martial went down with minimal - if any - contact, yet Dean sent the Poland international off despite watching the replay on the pitchside monitor.
A statement from the FA said: “Jan Bednarek will be available for Southampton FC’s next fixture after an Independent Regulatory Commission upheld a claim of wrongful dismissal and removed his suspension.
“The defender was sent off for denying an obvious goal scoring opportunity during a Premier League fixture against Manchester United FC on Tuesday [02/02/21].”
Saints’ successful appeal is finally a bit of good news for the club after that big defeat to United and a string of injury problems that has ravaged Ralph Hasenhuttl’s first team options.