| Season Number: | 5 |
| Bgcolour: |
|
| Num Episodes: | 23 |
| Network: | CBS |
| Prev Season: | Season 4 |
| Next Season: | Season 6 |
| Episode List: | List of Mission: Impossible (1966 TV series) episodes |
The fifth season of the original Mission: Impossible originally aired Saturdays at 7:30–8:30 pm (EST) from September 19, 1970[1] to March 6, 1971.[2] "The Merchant" originally aired Wednesday, March 17, 1971 at 7:30–8:30 pm (EST).[3]
| Character | Actor | Main | Recurring | |
| Jim Phelps | Peter Graves | Entire season | ||
| Paris | Leonard Nimoy | Entire Season | ||
| Dana Lambert | Lesley Ann Warren | Entire Season | ||
| Barney Collier | Greg Morris | Entire Season | ||
| Willy Armitage | Peter Lupus | Episodes 1-4,7-8,12,15-16,18,21-23 | ||
| Dr. Doug Robert | Sam Elliott | Episodes 5-6,9-11,13-14,17,19-20 | Episodes 3, 22 |
See also: List of Mission: Impossible (1966 TV series) episodes.