| Stefan Mueller | |
| Birth Date: | 13 October 1995 |
| Birth Place: | East Northport, New York, United States |
| Height: | 185 cm |
| Currentclub: | Union Omaha |
| Clubnumber: | 3 |
| Position: | Full-back |
| Youthyears1: | 2010–2013 |
| Youthclubs1: | BW Gottschee |
| Collegeyears1: | 2013–2016 |
| College1: | Temple Owls |
| Collegecaps1: | 70 |
| Collegegoals1: | 1 |
| Years1: | 2017 |
| Clubs1: | TB Uphusen |
| Years2: | 2018 |
| Clubs2: | Long Island Rough Riders |
| Caps2: | 2 |
| Goals2: | 0 |
| Years3: | 2018–2019 |
| Clubs3: | Southport |
| Caps3: | 4 |
| Goals3: | 0 |
| Years4: | 2020–2022 |
| Clubs4: | South Georgia Tormenta |
| Caps4: | 34 |
| Goals4: | 4 |
| Years5: | 2022 |
| Clubs5: | Rio Grande Valley FC |
| Caps5: | 9 |
| Goals5: | 0 |
| Years6: | 2023– |
| Clubs6: | Union Omaha |
| Caps6: | 4 |
| Goals6: | 0 |
| Club-Update: | October 18, 2023 |
Stefan Mueller (born October 13, 1995) is an American professional soccer player who plays as a defender for Union Omaha in USL League One.[1]
Mueller attended Temple University, playing all four years for their varsity soccer team. Throughout his four years at the college, Mueller registered 70 appearances, scoring once and tallying four assists.[2]
After graduating college, Mueller moved to Europe to play amateur soccer with TB Uphusen in Germany. In the summer of the following year, Mueller returned to the United States with the Long Island Rough Riders of USL League Two, making two appearances during the 2018 season.[3]
In July 2018, Mueller returned to Europe, signing with National League North club Southport.[4] He made his league debut for the club on August 7, 2018, playing the entirety of a 3–1 home defeat to Altrincham.[5]
In March 2020, Mueller returned to the States once again, signing with USL League One club Tormenta FC.[6] [7] He made his competitive debut for the club on July 25, 2020, playing the entirety of a 2–2 home draw with the Chattanooga Red Wolves.[8]
On March 8, 2022, Mueller was transferred to USL Championship side Rio Grande Valley FC for an undisclosed fee.[9]
Mueller joined USL League One club Union Omaha on January 31, 2023.[10]