The scene, between the junction with Elmbank Street and Holland Street, was taped off following the incident.
Police Scotland confirmed inquiries into the serious sexual assault were ongoing.
A spokesperson said: “Around 1.55am on Friday, 15 November 2024 we received a report of a serious sexual assault of a 19-year-old woman in Sauchiehall Lane between the junction with Elmbank Street and Holland Street in Glasgow.
“Enquiries are ongoing.”
