| Birth Date: | 24 March 1994 |
| Birth Place: | Wil, Switzerland |
| Height: | 1.78 m |
| Position: | Defensive midfielder |
| Currentclub: | Winterthur |
| Clubnumber: | 4 |
| Youthyears1: | –2012 |
| Youthclubs1: | Wil |
| Years1: | 2012–2018 |
| Clubs1: | Wil |
| Caps1: | 134 |
| Goals1: | 9 |
| Years2: | 2018–2020 |
| Clubs2: | Thun |
| Caps2: | 67 |
| Goals2: | 7 |
| Years3: | 2020–2023 |
| Caps3: | 83 |
| Goals3: | 7 |
| Years4: | 2023– |
| Caps4: | 35 |
| Goals4: | 3 |
| Nationalyears1: | 2017 |
| Nationalcaps1: | 2 |
| Nationalgoals1: | 0 |
| Club-Update: | 27 May 2024 |
| Nationalteam-Update: | 10 April 2017 |
Basil Stillhart (born 24 March 1994) is a Swiss professional footballer who plays as a defensive midfielder for Winterthur.
On 23 June 2023, Stillhart signed a three-season contract with Winterthur.[1]