| Igor Majcen | |
| Fullname: | Igor Majcen |
| Nationality: | Slovenian |
| Club: | Olimpija, Ljubljana |
| Birth Date: | 24 August 1969 |
| Birth Place: | Ljubljana, SR Slovenia, SFR Yugoslavia |
Igor Majcen (born August 24, 1969 in Ljubljana) is a retired male freestyle swimmer from Slovenia. He is a three-time Olympian, making his debut in 1988 for SFR Yugoslavia.
His best Olympic result was finishing in sixth place in the men's 1500 m freestyle event at the 1992 Summer Olympics in Barcelona, Spain. He was named Slovenian Sportsman of the Year in 1993, after having won the bronze medal in the men's 1500 m freestyle event at the 1993 European LC Championships in Sheffield.