• Nations at sport events in 2021‎ (5 C)
• 2021 in sport by continent‎ (7 C)
• 2021 in sports by country‎ (208 C)
• 2021 sports events by month‎ (12 C)

-

• 2021 sport-related lists‎ (33 P)

*

• Games and sports introduced in 2021‎ (2 C)

/

• Sports organizations disestablished in 2021‎ (2 C)
• Sports organizations established in 2021‎ (2 C, 7 P)
• Recurring sporting events disestablished in 2021‎ (1 C, 21 P)
• Recurring sporting events established in 2021‎ (4 C, 102 P)

+

• 2021 in men's sport‎ (5 C)
• 2021 in women's sport‎ (29 C, 3 P)

0–9

• 2021 in multi-sport events‎ (7 C, 13 P)

A

• 2021 in air sports‎ (2 P)
• 2021 in American football‎ (7 C, 17 P)
• 2021 in archery‎ (4 C, 10 P)
• 2021 in athletics (track and field)‎ (11 C, 75 P)
• 2021 sports awards‎ (9 P)

B

• 2021 in badminton‎ (6 C, 18 P)
• 2021 in baseball‎ (8 C, 27 P)
• 2021 in basketball‎ (27 C, 20 P)
• 2021 in bowling‎ (1 C, 6 P)
• 2021 in bowls‎ (2 C, 2 P)

C

• 2021 in camogie‎ (3 P)
• 2021 in Canadian football‎ (1 C, 11 P)
• 2021 in chess‎ (23 P)
• 2021 in sport climbing‎ (1 C, 8 P)
• 2021 in cricket‎ (35 C, 12 P)
• 2021 in cue sports‎ (1 C, 10 P)
• 2021 in cycle racing‎ (11 C, 4 P)

D

• 2021 in darts‎ (1 C, 19 P)
• Deaths of sportspeople in 2021‎ (1 P)
• 2021 in disability sport‎ (3 C, 8 P)
• 2021 in draughts‎ (3 P)

E

• 2021 in equestrian sports‎ (3 C, 5 P)
• 2021 in esports‎ (5 C, 15 P)

F

• 2021 in football‎ (3 C, 1 P)

G

• 2021 in Gaelic football‎ (5 C, 14 P)
• 2021 in Gaelic games‎ (4 C, 4 P)
• 2021 in goalball‎ (1 C, 1 P)
• 2021 in golf‎ (2 C, 58 P)
• 2021 in greyhound racing‎ (3 P)
• 2021 in gymnastics‎ (3 C, 48 P)

H

• 2021 in handball‎ (12 C, 31 P)
• 2021 in hockey‎ (6 C)
• 2021 in horse racing‎ (3 C, 18 P)
• 2021 in hurling‎ (3 C, 35 P)

K

• 2021 in korfball‎ (2 P)

L

• 2021 in lacrosse‎ (2 C, 5 P)

M

• 2021 in martial arts‎ (10 C, 2 P)
• 2021 in motorsport‎ (22 C, 52 P)

N

• 2021 in netball‎ (3 C, 1 P)

O

• 2021 in orienteering‎ (5 P)

P

• 2021 in modern pentathlon‎ (1 C, 5 P)
• 2021 in poker‎ (11 P)

R

• 2021 in roller sports‎ (2 C, 5 P)
• 2021 in rugby league‎ (7 C, 7 P)
• 2021 in rugby union‎ (16 C, 2 P)

S

• 2021 in shooting sports‎ (4 C, 9 P)
• 2021 in snooker‎ (26 P)
• 2021 in softball‎ (3 C, 4 P)
• 2021 in squash‎ (22 P)
• 2021 in strength athletics‎ (2 C)

T

• 2021 in table tennis‎ (3 C, 12 P)
• 2021 in tennis‎ (45 C, 10 P)
• 2021 in triathlon‎ (2 C, 8 P)

V

• Sports venues completed in 2021‎ (60 P)
• Sports venues demolished in 2021‎ (9 P)
• 2021 in volleyball‎ (7 C, 4 P)

W

• 2021 in water sports‎ (7 C, 6 P)
• 2021 in winter sports‎ (16 C, 2 P)

Y

• 2021 in youth sport‎ (5 C, 49 P)

• 2021 in sports
• 2021 in sports by month

~

• Template:World championships in 2021

0–9

• 2021 in shooting

A

• 2021 in the sport of athletics

D

• Deaths of sportspeople in 2021

I

• Impact of the COVID-19 pandemic on sports