| Zenon Trzonkowski | |
| Birth Date: | 19 September 1957 |
| Height: | 1.90 m |
| Position: | Defender |
| Youthyears1: | –1977 |
| Youthclubs1: | Stal Brzeg |
| Years1: | 1976–1977 |
| Clubs1: | Stal Brzeg |
| Years2: | 1977–1982 |
| Clubs2: | Śląsk Wrocław |
| Caps2: | 34 |
| Goals2: | 0 |
| Years3: | 1977–1982 |
| Clubs3: | Śląsk Wrocław II (loan) |
| Years4: | 1982–1983 |
| Clubs4: | Zagłębie Lubin |
| Manageryears1: | 1983–1984 |
| Managerclubs1: | Śląsk Wrocław (youth) |
| Manageryears2: | 1984–1985 |
| Managerclubs2: | Śląsk Wrocław II |
| Manageryears3: | 1985 |
| Managerclubs3: | Odra Opole |
| Managerclubs4: | Karpaty Krosno |
| Managerclubs5: | BTP Brzeg |
Zenon Trzonkowski (19 September 1957 – 18 November 2021) was a Polish professional footballer who played as a defender and later coach and manager.
Starting his career at Stal Brzeg Trzonkowski went on to play 34 matches in the top division for Śląsk Wrocław. He also played for their reserves when they won promotion to the third division in 1982, before ending his career at rivals Zagłębie Lubin.
He ended his playing career aged 26 due to a career-ending knee injury.
Trzonkowski managed Śląsk's youth and reserve teams, and won promotion to the third division with the latter. In 1985 he was briefly manager of Odra Opole. He later also managed Karpaty Krosno and ended his career at home club, called BTP at the time.