Żnin (Polish: [ʐɲin] ⓘ; German: Znin, 1941–45: Dietfurt) is a town in north-central Poland with a population of 14,181 (June 2014).

The area was known in Roman times, especially the nearby fortification of Biskupin, a Lusatian culture site known as the "Polish Pompeii".

Biskupin was an early Iron Age Hallstatt C fortified settlement of about 800-1000 people in the Warta River valley circa 800-650 and 650-475 BC.

The first mention of Żnin is in the Gniezno papal bull issued on 7 July 1136 by Pope Innocent II.

In the rebuilt town in 1459, the first wind-mill was constructed, while breweries, orchards, and workshops increased Żnin's prosperity.

However, tourists can still admire the historic centre of Żnin and its old structure dating back to the Middle Ages.

Żnin was annexed by the Kingdom of Prussia in 1772 during the First Partition of Poland and subsequently administered within the Netze District.

In September 1794, during the unsuccessful Kościuszko Uprising, Polish forces under General Jan Henryk Dąbrowski, passed Gąsawa from Poznań and liberated Żnin.

The local garrison commander, Colonel Keszycki, established a recruitment center for volunteers in the town.

On 1 September 1939, the first day of World War II, Nazi Germany's Luftwaffe bombed undefended Żnin.

Other points of interest include: Located 45 kilometres (28 miles) to the north of Żnin, the Bydgoszcz Ignacy Jan Paderewski Airport is the nearest one.

Several companies dealing with public transport serve Żnin with bus services connecting the town with all major cities of the region (Bydgoszcz, Gniezno, Inowrocław, Poznań, Toruń, Wągrowiec) and also with Wrocław.

For bus connections see: Żnin is served by expressway S5 which runs from Wrocław via Poznań, Gniezno to Bydgoszcz and Świecie.