Category:4 (number)

F

• Four Worlds‎ (5 P)
• Four-dimensional geometry‎ (2 C, 15 P)
• Four-wheeled robots‎ (14 P)

Q

• Quadripoints and higher‎ (15 P)
• Quartets‎ (10 C, 44 P)

T

• Tetralogies‎ (2 C, 4 P)
• Tetramers (chemistry)‎ (1 C, 2 P)
• Tetrapods‎ (7 C, 4 P)

• 4

C

• Four continents
• Four corners of the world

F

• Final four
• Four Big Things
• Four Marks of the Church
• Four kingdoms of Daniel
• Four Policemen
• The four woes of Jesus
• Four-dimensional space
• Fourth Doctor
• Fourth television network

M

• Four Modernizations

P

• Quadrupedalism

Q

• Quadrilateral
• Quadrivium
• Quadruple Alliance (1815)
• Quartile
• Quaternary floating point

S

• Four Seas
• Square