Liga IV Vaslui
| Founded | 1968 |
|---|---|
| Country | Romania |
| Level on pyramid | 4 |
| Promotion to | Liga III |
| Relegation to | Liga V Vaslui |
| Domestic cup(s) | Cupa României Supercupa României |
| Current champions | Comstar Vaslui (2nd title) (2024–25) |
| Most championships | Hușana Huși (8 titles) |
| Website | AJF Vaslui |
| Current: 2025–26 Liga IV Vaslui | |
Liga IV Vaslui is the county Liga IV football division for clubs in Vaslui County, Romania. The competition is ranked as the fourth tier of the Romanian football league system and is organized by AJF Vaslui – Asociația Județeană de Fotbal (lit. 'County Football Association').
It is contested by a variable number of teams, depending on the number of teams relegated from Liga III, the number of teams promoted from Liga V Vaslui, and the teams that withdraw or enter the competition. The winner may or may not be promoted to Liga III, depending on the result of a promotion play-off contested against the winner of a neighboring county series.