| Mode: | Basketball |
| Year: | 2017–18 |
| Team: | Northern Arizona Lumberjacks |
| Conference: | Big Sky Conference |
| Short Conf: | Big Sky |
| Record: | 5–27 |
| Conf Record: | 2–16 |
| Hc Year: | 6th |
| Asst Coach1: | Matt Dunn |
| Asst Coach2: | Wes Pifer |
| Asst Coach3: | Jason Sanchez |
The 2017–18 Northern Arizona Lumberjacks men's basketball team represented Northern Arizona University during the 2017–18 NCAA Division I men's basketball season. The Lumberjacks were led by sixth-year head coach Jack Murphy and played their home games at the Walkup Skydome in Flagstaff, Arizona as members of the Big Sky Conference. They finished the season 5–27, 2–16 in Big Sky play to finish in last place. They lost in the first round of the Big Sky tournament to Northern Colorado.
The Lumberjacks finished the 2016–17 season 9–23, 6–12 in Big Sky play to finish in 10th place. Due to Northern Colorado's self-imposed postseason ban, the Lumberjacks were the No. 9 seed in the Big Sky tournament where the lost in the first round to Portland State.
| Name | Number | Pos. | Height | Weight | Year | Hometown | Reason for departure | |
|---|---|---|---|---|---|---|---|---|
| Majestic Tejada | 1 | G | 6'0" | 180 | Sophomore | Transferred | ||
| Mike Green | 5 | G | 5'10" | 155 | Sophomore | Transferred | ||
| Jaleni Neely | 10 | G | 6'0" | 170 | RS Senior | Graduated | ||
| Ako Kaluna | 11 | F/C | 6'7" | 295 | Senior | Graduated | ||
| Felix Rivera-Vega | 13 | F | 6'6" | 190 | Sophomore | Transferred to Georgetown College | ||
| Raynard Robinson | 14 | F | 6'8" | 230 | Freshman | Left the team for personal reasons | ||
| Steven Stanley | 20 | F | 6'7" | 210 | Sophomore | Walk-on; didn't return | ||
| Travis Rice | 30 | G | 6'2" | 170 | Freshman | Transferred | ||
| Jordyn Martin | 34 | F | 6'7" | 210 | RS Senior | Graduated | ||
| Marcus DeBerry | 41 | G | 6'5" | 155 | Sophomore | Transferred to Fort Wayne |
| Name | Number | Pos. | Height | Weight | Year | Hometown | Previous School | |
|---|---|---|---|---|---|---|---|---|
| Gino Littles | 3 | G | 6'0" | 160 | Senior | Transferred from UTSA. Will be eligible to play immediately since Littles graduated from UTSA. | ||
| Malcolm Allen | 10 | G | 6'1" | 180 | RS Senior | Transferred from Stanford. Will be eligible to play immediately since Allen graduated from Stanford. |
|-!colspan=9 style=| Non-conference regular season|-!colspan=9 style=| Big Sky regular season|-!colspan=9 style=| Big Sky tournament