Grok is a word coined by Robert Heinlein meaning "to know intimately".

Grok may also refer to:

• Grok (chatbot), an AI chatbot created by xAI
• Grok (JPEG 2000), a graphics library
• Grok (web framework), an open-source web framework based on Zope Toolkit technology
• Grok Magazine, an Australian free student magazine
• Grok Ventures, a company owned by Australian entrepreneur Mike Cannon-Brookes
• Project Grok, later known as Google Kythe, a source code indexer
• Grok, a programming language created by Ric Holt

• Groklaw, a defunct website
• OpenGrok, a source code search and cross reference engine
• Grock (1880–1959), Swiss clown and musician
• Grook, a form of short aphoristic poem
• The Groke, a fictional character from the Moomins
• Groq, an AI technology company