| Birth Place: | Ogndal, Norway |
| Sport: | Ski jumping |
| Club: | Ogndal Idrettslag |
| Show-Medals: | yes |
Torgeir Torbjørn Brandtzæg (born 6 October 1941) is a retired Norwegian ski jumper who won bronze medals both in the large hill and normal hill at the 1964 Winter Olympics.
Brandtzæg placed fifth in the Four Hills Tournament in 1963; he won it in 1965, placing first in three out of four events. He also held the national jumping titles in 1963–1965. In 1965, while competing in Finland, he broke his leg in three places and was forced to retire. After that he married and became a farmer in Sparbu. One of his sons, Roy Brandtzæg, became a European powerlifting champion.