• 20th-century debut works (14 C)

0–9

• 1900s works (44 C, 1 P)
• 1910s works (46 C)
• 1920s works (48 C, 1 P)
• 1930s works (51 C, 3 P)
• 1940s works (53 C, 1 P)
• 1950s works (59 C, 1 P)
• 1960s works (56 C, 2 P)
• 1970s works (51 C, 2 P)
• 1980s works (60 C, 3 P)
• 1990s works (55 C, 1 P)

A

• 20th-century albums (11 C)
• 20th-century American animation (9 C, 1 P)
• 20th century in animation (15 C, 4 P)
• 20th-century anime (11 C)

B

• 20th-century ballads (6 C, 7 P)
• 20th-century ballets (10 C)
• Ballets by Jerome Robbins (38 P)
• 20th-century books (17 C, 28 P)
• Buildings and structures completed in the 20th century (37 C, 17 P)

C

• 20th-century clothing (8 C, 1 P)
• 20th-century comics (13 C)
• 20th-century compositions (10 C, 5 P)

D

• 20th-century dance (7 C, 24 P)
• 20th-century documents (16 C, 3 P)
• 20th-century drawings (4 C, 7 P)

E

• 20th-century essays (11 C)

F

• 20th-century films (21 C)

I

• 20th-century inscriptions (13 P)

M

• 20th-century manga (8 C)
• 20th-century maps and globes (10 P)
• Modern tapestries (17 P)
• 20th-century murals (8 C, 4 P)
• 20th century in music (34 C, 162 P)
• 20th-century musicals (10 C, 1 P)

O

• 20th-century operas (10 C)

P

• 20th-century paintings (23 C, 11 P)
• 20th-century photographs (10 C, 1 P)
• 20th-century plays (22 C, 3 P)
• 20th-century poems (14 C, 19 P)
• 20th-century prints (4 C, 14 P)
• 20th-century publications (1 C, 5 P)

R

• 20th-century radio programme debuts (8 C)
• 20th-century radio programme endings (8 C)

S

• 20th-century science fiction works (14 C, 2 P)
• 20th-century sculptures (51 C, 16 P)
• 20th-century short stories (11 C, 9 P)
• 20th-century short story collections (10 C)
• 20th-century singles (12 C)
• 20th-century software (8 C)
• 20th-century speculative fiction works (14 C)
• 20th-century speeches (11 C, 2 P)

T

• 20th-century television commercials (5 C)
• 20th-century television episodes (12 C)
• 20th-century television series (21 C)
• 20th-century television series debuts (79 C)
• 20th-century television specials (9 C)

V

• 20th-century videos (4 C)