| Mode: | Basketball |
| Year: | 2020-21 |
| Prev Year: | 2019-20 |
| Next Year: | 2021–22 |
| Team: | Kansas State Wildcats |
| Conference: | Big 12 Conference |
| Short Conf: | Big 12 |
| Record: | 9–20 |
| Conf Record: | 4–14 |
| Head Coach: | Bruce Weber |
| Hc Year: | 9th |
| Asst Coach1: | Chris Lowery (9th season) |
| Asst Coach2: | Jermaine Henderson (2nd season) |
| Asst Coach3: | Shane Southwell (1st season) |
| Stadium: | Bramlage Coliseum (12,528) |
The 2020–21 Kansas State Wildcats men's basketball team represented Kansas State University in the 2020–21 NCAA Division I men's basketball season, their 118th basketball season. Their head coach is Bruce Weber in his ninth year at the helm of the Wildcats. The team played their home games in Bramlage Coliseum in Manhattan, Kansas as members of the Big 12 Conference. They finished the season 9-20, 4-14 in Big 12 Play to finish in 9th place. They defeated TCU in the first round of the Big 12 tournament before losing in the quarterfinals to Baylor.
|-!colspan=12 style=|Regular Season
|-!colspan=12 style=| Big 12 tournament
See main article: 2020–21 NCAA Division I men's basketball rankings.
*AP does not release post-NCAA tournament rankings
^Neither poll released a Week 1 ranking list.