| Mode: | Basketball |
| Sex: | none |
| Year: | 2017–18 |
| Team: | Southeastern Louisiana Lions |
| Conference: | Southland Conference |
| Short Conf: | Southland |
| Record: | 22–12 |
| Conf Record: | 15–3 |
| Head Coach: | Jay Ladner |
| Hc Year: | 4th |
| Asst Coach1: | David Kiefer |
| Asst Coach2: | Joey Stiebing |
| Asst Coach3: | Kyle Roane |
| Stadium: | University Center (Capacity: 7,500) |
| Champion: | Southland regular season co-champions |
| Bowl: | NIT |
| Bowl Result: | First round |
The 2017–18 Southeastern Louisiana Lions basketball team represented Southeastern Louisiana University during the 2017–18 NCAA Division I men's basketball season. The Lions, led by fourth-year head coach Jay Ladner, played their home games at the University Center in Hammond, Louisiana as members of the Southland Conference. They finished the season 22–12, 15–3 in Southland play to finish in a tie for the Southland regular season championship with Nicholls State. As the No. 1 seed in the Southland tournament, they defeated Sam Houston State in the semifinals before losing in the championship game to Stephen F. Austin. As a regular season champion, and No. 1 seed in their conference tournament, who failed to win their conference tournament, they received an automatic bid to the National Invitation Tournament where they lost in the first round to Saint Mary's.
The Lions finished the 2016–17 season 16–16, 9–9 in Southland play to finish in seventh place. They lost in the first round of the Southland tournament to Lamar.[1]
|-!colspan=9 style=| Exhibition|-!colspan=9 style=| Non-conference regular season|-!colspan=9 style=|Southland regular season|-!colspan=9 style=| Southland tournament|-!colspan=9 style=| NIT