Gregoor may refer to:

• Gregoor van Dijk (born 1981 in Groningen), Dutch footballer
• Johannes "Jan" (Jacobus) Gregoor (1914–1982), Dutch painter and art educator

• Gemini (equivalents in Chinese astronomy)
• Gemini Force One
• Geminiganesan
• Gemini Ganesan filmography
• Gemini Ganeshan
• Gemini Giant
• Gemini Guidance Computer
• Gemini Gymnastics
• Gemini, Her Majesty
• Gemini, Her Majesty (album)
• Gemini, Her Majesty(album)
• Gemini Hummingbird
• Gemini (Hungarian band)
• Gemini International Hummingbird
• Gemini Kantha
• Gemini kantha
• Gemini (Lana Lane album)
• Gemini (musician)
• Gemini (Musician)
• GE Mining
• Gemini Powered Parachutes
• Gemini (racing car)
• Gemini Records
• Gemini Rising
• Gemini Rue