Stankevicius has had his loan at Oldham cut short.
The Lithuania international joined from Leicester on a three-month deal at the end of August, but has returned to the King Power Stadium ahead of schedule.
The 20-year-old striker managed just four appearances for Athletic, with one start, and did not score.
A brief statement from the club read: "Young striker Simonas Stankevicius has returned to his parent club Leicester City. We would like to thank Stan for his efforts and wish him luck for the future."