Mandhata, also called Omkareshwar or Shivapuri and ancient Mahishmati, capital of Avanti Mahajanpada is a riverine island in the Narmada river in Khandwa district, Madhya Pradesh, India. Omkareshwar Jyotirlinga is situated on the southern part of the island. Omkareshwar Mandhata is located on the Mandhata hill on the banks of the Narmada.

Omkareshwar ओंकारेश्वर Mandhata
Town
Omkareshwar Location in Madhya Pradesh, India Show map of Madhya Pradesh Omkareshwar Omkareshwar (India) Show map of India
Coordinates: 22°15′N 76°09′E / 22.25°N 76.15°E / 22.25; 76.15
Country	India
State	Madhya Pradesh
District	Khandwa
Named for	Omkareshwar jyotirlinga
Population
• Total	20,000
Languages
• Official	Hindi
Time zone	UTC+5:30 (IST)
ISO 3166 code	IN-MP
Vehicle registration	MP

The name "Omkareshwar" is due to the shape of the island, which appears to be Om. It is about two km (1.2 mi) long and 1 km (0.62 mi) wide. Local tradition reveals that King Mandhata paid homage to Shiva here and made this holy place his capital.

This place is situated at a distance of about 10 km from Omkareshwar Road railway station on Akola–Ratlam rail line.^[1]