| Grels Teir | |
| Party: | Swedish People's Party of Finland |
| Birth Date: | 26 February 1916 |
| Birth Place: | Lappfjärd |
| Death Date: | 23 June 1999 |
| Office: | Minister of Transport and Public Works |
| Term Start: | 12 September 1964 |
| Term End: | 27 May 1966 |
| Office2: | Minister of Trade and Industry |
| Term Start2: | 22 March 1968 |
| Term End2: | 14 May 1970 |
| Term Start3: | 4 September 1972 |
| Term End3: | 31 December 1972 |
| Office4: | Deputy Minister of Social Affairs and Health |
| Term Start4: | 13 June 1975 |
| Term End4: | 30 November 1975 |
Grels Olof Teir (26 February 1916,[1] Lappfjärd – 23 June 1999) was a Finnish lawyer and politician. He served as Minister of Transport and Public Works from 12 September 1964 to 27 May 1966, Minister of Trade and Industry from 22 March 1968 to 14 May 1970 and again from 4 September to 31 December 1972,[2] and Deputy Minister of Social Affairs and Health from 13 June to 30 November 1975.
He was a member of the Parliament of Finland from 1951 to 1975, representing the Swedish People's Party of Finland (SFP).[3]