ZZ

ZZ or zz may refer to:

Businesses and organisations

• Zhongzhi Capital or ZZ Capital, an asset management company
• Živi zid ("Human Shield"), a Croatian political party

Games and sport

• ZZ Leiden, a Dutch basketball club
• ZZ method, in speedcubing
• ZZ scale, of model rail

Music

• ZZ (band), a Japanese rock band
• Z. Z. Hill (1935–1984), American blues singer
• ZZ Top, an American rock band
• ZZ Ward (born 1986), American blues rock singer
• "Zz", a silent track on the 2014 album Sleepify by Vulfpeck

Science and mathematics

Astronomy

• ZZ Boötis, a star system in the constellation Boötes
• ZZ Ceti, a type of pulsating white dwarf star
• G 29-38 or ZZ Piscium, a variable white dwarf star

Molecular biology

• ZZ zinc finger, a type of protein domain
• ZZ, homogametic males under the ZW sex-determination system
• ZZ, homogametic males under the ZO sex-determination system

Other uses in science and mathematics

• Zamioculcas (or ZZ plant), a flowering plant genus
• ZZ diboson, in particle physics
• $\mathbb {Z}$, the Zahlen symbol for the set of integers

Vehicles

• Isuzu Gemini ZZ/R, a subcompact car
• Tommykaira ZZ, a mid-engined sports car
• Toyota ZZ engine, a straight-4 piston engine series
• Kawasaki ZZ-R1200, a motorcycle

Other uses

• Zz (digraph), in the Latin alphabet
• ZZ Packer (born 1973), American writer
• The War Games, a 1969 Doctor Who serial (production code: ZZ)

See also

• Sleep (disambiguation)
• Z (disambiguation)
• Zzz (disambiguation)
• Zzzz (disambiguation)
• ZZR (disambiguation)