Look up crux or Crux in Wiktionary, the free dictionary.

Crux or the Southern Cross is a constellation.

Crux may refer to:

• Crux (literary), a passage whose correct reading is difficult to determine
• Crux (journal), a journal published by the Australian Student Christian Movement from 1961 to 1972
• "Crux", a poem by Patti Smith from her 1996 book The Coral Sea
• Crux (comics), 2001–2004, an American comic book published by CrossGen Entertainment
• Crux, a 2013 novel in The Nexus Trilogy by Ramez Naam
• Crux (online newspaper), a 2014 news website focusing on Catholic news

• The Crux (band), a 2008 American band
• The Crux (album), 2012, by Hurt

• Crux (insect), a genus of cave wētā found in New Zealand
• Crux cordis or crux of the heart, an area of the heart
• CRUX, a Linux distribution
• "Crux", a theme in the 2002 GNOME 2 desktop environment

• Crux, a character in the 2001 anime TV series Final Fantasy: Unlimited
• Eugene Solano, callsign Crux, Gryphus-1's air operator in the 2006 videogame Ace Combat X: Skies of Deception
• The Crux, an armed fleet in the 2020 role-playing game Genshin Impact

• Cross (Latin: crux)
• Crux (climbing), the most difficult section of a climbing or mountaineering route
• Crux Mathematicorum, est. 1975, published by the Canadian Mathematical Society
• Yamaha Crux, a motorcycle manufactured by India Yamaha Motor
• CRUX (YouTube), an Indian online news channel owned by the Network18 Group

• Cross (disambiguation)

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