| Country: | Greece |
| Colorcode: | green |
| Native Name: | Νέος Αγωνιστής-Δίκτυο Αριστερών Σοσιαλιστών Neos Agonistis-Diktyo Aristeron Sosialiston |
| New Fighter-Network of Left Socialists | |
| Foundation: | 2006 |
| Split: | Panhellenic Socialist Movement |
| Position: | Left-wing |
| National: | Coalition of the Radical Left (2011-2015) Popular Unity (2015-present) |
| Website: | Official site |
New Fighter-Network of Left Socialists (Greek, Modern (1453-);: Νέος Αγωνιστής) is a left-wing political party in Greece and former member of the Coalition of the Radical Left (SYRIZA). It was founded in 2006 as a faction in Panhellenic Socialist Movement. It was formed by former members of PASOK and non-aligned socialists, who are motivated by the principles of democratic socialism. Since 2011, the New Fighter participated in SYRIZA. However, New Fighter left SYRIZA in 2015 and joined Popular Unity for the September 2015 legislative elections.