| Internationalist Communist League | |
| Native Name: | Liga Comunista Internacionalista |
| Colorcode: | Red |
| Foundation: | 1973 |
| Dissolution: | 1978 |
| Merged: | Revolutionary Socialist Party |
| Position: | Far-left |
| Ideology: | Communism Marxism Trotskyism |
| Country: | Portugal |
Internationalist Communist League (Portuguese: Liga Comunista Internacionalista) was a Trotskyist political party in Portugal. LCI was founded in 1973. It became the Portuguese section of the reunified Fourth International.
LCI published Acção Comunista, and, for young people, "Toupeira Vermelha".
In 1978 LCI merged with PRT to form the Revolutionary Socialist Party.