| Yisha'ayahu Schwager ישעיהו שווגר | |
| Fullname: | Jeszaja Szwagier |
| Birth Date: | 10 February 1946 |
| Birth Place: | Poland |
| Death Place: | Israel |
| Position: | Defender |
| Youthclubs2: | Maccabi Haifa |
| Years1: | 1962 - 1976 |
| Clubs1: | Maccabi Haifa |
| Caps1: | 360 |
| Goals1: | 11 |
| Nationalyears1: | 1966 - 1974 |
| Nationalteam1: | Israel |
| Nationalcaps1: | 37 |
| Nationalgoals1: | 0 |
Yisha'ayahu Schwager (Hebrew: ישעיהו שווגר, Polish: Jeszaja Szwagier; born in Poland, 10 February 1946, death in Israel, 31 August 2000) was an Israeli footballer.
Schwager was a member of the Israel squad that participated in the World Cup finals in Mexico. During a group play match against Italy, Schwager was given the task of marking Luigi Riva, which he did so well that he received praise from the media back home. In 2000, Schwager died from a heart attack.
Schwager also played at the 1968 Summer Olympics.