Group 4 may refer to:
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Group 4 element
Group 4 is the second group of transition metals in the periodic table. It contains only the four elements titanium (Ti), zirconium (Zr), hafnium (Hf), and rutherfordium (Rf). The group is also called the titanium group or titanium family after ...
, chemical element classification
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Group 4 (motorsport), classification for cars in auto racing and rallying
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G4S, formerly Group 4 Securicor, a prominent British security company
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IB Group 4 subjects, subject group for the experimental sciences in the International Baccalaureate program
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Group 4 image format, Group 3 & Group 4 are digital technical standards for image compressing and sending in faxes, and in the Tagged Image File Format (TIFF)
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Group of Four, the Group of Four (also known as G4) is a coalition of Brazil, Germany, India and Japan, who seek to reform membership in the United Nations Security Council
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Group 4 (company), a defunct British security company
*"Group Four", a song from Massive Attack's album,
''Mezzanine''
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