| Mode: | Women's basketball |
| Year: | 2018–19 |
| Prev Year: | 2017–18 |
| Next Year: | 2019–20 |
| Team: | Idaho Vandals |
| Conference: | Big Sky Conference |
| Short Conf: | Big Sky |
| Record: | 22–12 |
| Conf Record: | 16–4 |
| Hc Year: | 11th |
| Asst Coach1: | Christa Stanford |
| Asst Coach2: | Jeri Jacobson |
| Asst Coach3: | Drew Muscatell |
| Champion: | Big Sky regular season champions |
| Bowl: | WNIT |
| Bowl Result: | Third Round |
The 2018–19 Idaho Vandals women's basketball team represents the University of Idaho during the 2018–19 NCAA Division I women's basketball season. The Vandals, led by eleventh year head coach Jon Newlee, play their home games at the Cowan Spectrum with early season games at Memorial Gym, and are members of the Big Sky Conference. They finished the season 22–12, 16–4 in Big Sky play to win the Big Sky regular season championship. They advanced to the semifinals of the Big Sky women's tournament where they lost to Portland State. They received an automatic bid to the Women's National Invitation Tournament where defeated Loyola Marymount and Denver in the first and second rounds before losing to Arizona in the third round.
[1] |-!colspan=9 style=| Exhibition|-!colspan=9 style=| Non-conference regular season|-!colspan=9 style=| Big Sky regular season|-!colspan=9 style=| Big Sky Women's Tournament|-!colspan=9 style=| WNIT