Organizations
- Apex (altitude physiology expeditions), a high altitude medical research charity
- Apex court, the supreme court in several South Asian states, e. g. the Supreme Court of India
- Apex Clubs of Australia, an association of young individuals, who seek to serve their local community and promote community spirit
- Apex Digital, a California-based electronics manufacturer
- Apex Hotels, a UK operator of four star hotels
- Apex One Inc., the Piscataway, New Jersey-based apparel and footwear company that Converse bought, then closed, in 1995
- Apex Records (Canada), a record label of Compo Company
- Apex Silver Mines, a US-American mining company
- Apex Stores, a Rhode Island-based department store chain
- Asian Professional Exchange
- Association of Professional, Executive, Clerical and Computer Staff, a British Trade Union
- Apex Racing Skates, a Canadian company making custom molded skates for inline, short track and long track speed skating.
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