| Ib Larsen | |
| Birth Date: | 1 April 1945 |
| Birth Place: | Kongens Lyngby |
| Sport: | Rowing |
Ib Ivan Larsen (born 1 April 1945) is a Danish rower who competed in the 1968 Summer Olympics.
He was born in Kongens Lyngby.
In 1964 he was a crew member of the Danish boat which won the bronze medal in the coxless pairs competition.