May refer to:

• Jat people
• Muslim Jat of Punjab
• Jats of Sindh
• Jat Airways, a former Serbian airline
• Jat (Sangli), a town in Maharashtra, India
• Java Astrodynamics Toolkit
• Java Agent Template
• Jatt, Israel
• Yat, a letter in Cyrillic script
• Peripatetic Jats
• Jati, a community in India

The Jat people (also spelled Jatt and Jaat) are a traditionally agricultural community in Northern India and Pakistan. Originally pastoralists in the lower Indus river-valley of Sindh, Jats migrated north into the Punjab region, Delhi, Rajputana, and the western Gangetic Plain in late medieval times. Primarily of Hindu, Muslim and Sikh faiths, they now live mostly in the Indian States of Haryana, Punjab, Delhi, Rajasthan and Uttar Pradesh and the Pakistani provinces of Punjab and Sindh.