| Bolesław Fleszar | |
| Birth Name: | Bolesław Józef Fleszar |
| Birth Date: | 1933 12, df=y |
| Birth Place: | Wólka Pełkińska, Poland |
| Nationality: | Polish |
| Occupation: | Chemist |
| Education: | University of Łódź |
| Party: | KO "S" |
| Office: | Member of the Senate of Poland |
| Term Start: | 18 June 1989 |
| Term End: | 25 November 1991 |
Bolesław Józef Fleszar (17 December 1933 – 30 November 2023) was a Polish chemist and politician. A member of the Solidarity Citizens' Committee, he served in the Senate from 1989 to 1991.[1]
Fleszar died on 30 November 2023, at the age of 89.[2]