| Club: | Sporting Kansas City |
| Season: | 2021 |
| Stadium: | Children's Mercy Park |
| League: | MLS |
| League Result: | Conference 3rd |
| Chrtitle: | Owner |
| Chairman: | Sporting Club |
| Mgrtitle: | Head coach |
| Manager: | Peter Vermes |
| Cup1: | Playoffs |
| Cup1 Result: | Conference Semifinals |
| Cup2: | U.S. Open Cup |
| Cup2 Result: | Canceled |
| Cup3: | Leagues Cup |
| Cup3 Result: | Quarter-finals |
| Highest Attendance: | League/All: |
| Lowest Attendance: | League/All: 16,888 (9/15 v. MIN) |
| Average Attendance: | League/All: |
| Largest Loss: | All: SKC 1–6 LEÓN (8/10, LC QF) League: LAFC 4–0 SKC (9/3) |
| Pattern B1: | _skc21h |
| Pattern Sh1: | _adidasshortnavy |
| Pattern So1: | _3_stripes_navy |
| Leftarm1: | a0d0ff |
| Body1: | a0d0ff |
| Rightarm1: | a0d0ff |
| Shorts1: | a0d0ff |
| Socks1: | a0d0ff |
| Pattern La2: | _skc20a |
| Pattern B2: | _skc20A |
| Pattern Ra2: | _skc20a |
| Pattern So2: | _skc20a |
| Shorts2: | 0C2340 |
| Socks2: | 0C2340 |
| American: | true |
| Prevseason: | 2020 |
| Nextseason: | 2022 |
The 2021 Sporting Kansas City season was the twenty-sixth season of the team's existence in Major League Soccer and the eleventh year played under the Sporting Kansas City moniker. The season began on April 17.[1]
Sporting KC players reported for a seven day quarantine period involving medical exams and testing on March 1. The team then trained for six weeks beginning on March 8 before the season started on April 17.[2] Sporting KC began a one week voluntary training on March 1 before heading to Arizona on March 7. The team then began preseason training and played 4 preseason matches on March 13, March 20, March 24 and April 3 before returning to Kansas City on April 3.
Per Major League Soccer and club policies terms of the deals do not get disclosed.
| Date | Player | Position | Previous club | Fee/notes | Ref | |
|---|---|---|---|---|---|---|
| October 21, 2020 |  Wilson Harris | FW | Sporting Kansas City II | Homegrown Signing | [3] | |
| December 17, 2020 | Kendall McIntosh | GK | New York Red Bulls | 2020 MLS Re-Entry Process Signing | [4] | |
| December 22, 2020 |  Remi Walter | MF |  Yeni Malatyaspor | International Signing | [5] | |
| January 20, 2021 | Grayson Barber | MF | Sporting Kansas City Academy | Homegrown Academy Signing | [6] | |
| January 20, 2021 | Ozzie Cisneros | FW | Sporting Kansas City Academy | Homegrown Academy Signing | ||
| January 20, 2021 | Brooks Thompson | GK | Sporting Kansas City Academy | Homegrown Academy Signing | ||
| February 3, 2021 | Nicolas Isimat-Mirin | DF | Beşiktaş J.K. | International Signing | [7] |
Draft picks are not automatically signed to the team roster. Only trades involving draft picks and executed after the start of 2020 MLS SuperDraft will be listed in the notes.
| Round | Pick Number | Player | Position | School | |
|---|---|---|---|---|---|
| 2 | 23 | Matt Constant | align=center | DF | University of North Carolina |
| 3 | 23 | Jamil Roberts | align=center | FW | Marshall University |
| Date | Player | Position | Destination club | Notes | Ref |
|---|
Kickoff times are in CDT (UTC-05) unless shown otherwise
Preseason schedule announced on March 1, 2021.[8]
See main article: 2021 MLS Cup Playoffs.
See main article: 2021 Leagues Cup.
Last updated on September 23, 2020.|-! colspan="14" style="background:#dcdcdc; text-align:center"|Goalkeepers
|-! colspan="14" style="background:#dcdcdc; text-align:center"|Defenders
|-! colspan="14" style="background:#dcdcdc; text-align:center"|Midfielders
|-! colspan="14" style="background:#dcdcdc; text-align:center"|Forwards|-! colspan=14 style=background:#dcdcdc; text-align:center| Players who have made an appearance or had a squad number this season but have left the club|-|}
0+1 means player did came on as a sub once. 1+1 means player started once and came on as a sub once.