Wizna [ˈvizna] is a village in Łomża County of Podlaskie Voivodeship, in north-eastern Poland, situated on the Narew River. Wizna is known for the battle of Wizna which took place in its vicinity during the 1939 Invasion of Poland at the start of World War II.

Farming and food production are the primary sources of income for the residents. The food production by private farms provides favorable conditions for the development of processing industry.

Wizna has a remarkably rich history. Already in the 11th century there was a castle there watching over the eastern border of Masovia and the important river crossing over Narew. From the mid 12th century the town was a registered office of the castellany, and from 1379 the capital of the Ziemia wiska (Wizna Land) within Masovia, Poland. The Catholic Parish in Wizna was established in 1390.

Wizna was built on an important trade route from Lithuania (within the Polish–Lithuanian union) to Kraków. Queen of Poland Anna the Jagiellonian used to travel through the town and so did Queen Bona Sforza. In 1435–1870, for over four centuries, Wizna was one of the most important cities of north-eastern Masovia. It was a royal town of Poland and seat of the Wizna County and Wizna Land in the Masovian Voivodeship in the Greater Poland Province. Its significance began to drop only with the development of the nearby town of Łomża.

In the Third Partition of Poland in 1795, Wizna was annexed by Prussia. In 1807, it was regained by Poles and included within the short-lived Polish Duchy of Warsaw, and after its dissolution in 1815, fell to the Russian Partition of Poland. Administratively it was located in the Augustów Voivodeship, which was renamed to Augustów Governorate in 1837. In 1860 Wizna had 2,573 residents. In October 1861, due to Polish protests in various places throughout the country, the Russians imposed martial law. Afterwards the Polish resistance began preparations for an uprising. One of the organizers of the uprising in the Augustów Governorate was Rafał Błoński, son of the mayor of Wizna. In 1863 the January Uprising broke out, many local Poles joined it, and insurgents operated in the area. Ludwik Krajewski, commander of a small insurgent unit, was captured by the Russians in Wizna and hanged, and then his body was dragged through the streets of the town to deter others from joining the uprising. The Russians also carried out deportations to Siberia, arrests and executions of local people. In 1870, Wizna was one of many Polish towns deprived of town rights by the Russian administration as punishment for the January Uprising.

Following World War I, in 1918, Poland regained independence and control of the settlement. In the interwar period the population numbers rose to over 3,300 partly due to influx of new Jewish immigrants from the neighboring states.

It is not clear when Jews started to settle in Wizna. Most of the Jewish population lived around the Rynek (Town Square) and the nearby streets. In 1765, 16 Jewish families (about 75 individuals) lived in Wizna. In 1857, there were 492 Jews out of a total population of 1,861; in 1921, they numbered 714 out of 2,670. Jews were mostly small merchants, craftsman and service providers. In the small village of Witkowo, on the Narew River adjacent to the north side of Wizna, a few Jewish families were farmers and fishermen. These included the Gostkowski family, which had operated a ferry on the Narew River for over 100 years prior to the construction of the bridge on the road between Łomża and Bialystok. Urke Nachalnik was born in Wizna to the Farberowicz family, who were grain merchants and operated a flour mill. Nachalnik's books and stories were published in several languages by the Yiddish press in Poland and in the United States in the 1930s, and some were turned into stage plays.

Zionist parties were active in Wizna during the 1920s and 1930s. A Hebrew school called Tarbut was opened, and there were active Zionist youth movements - Hashomer Hatzair and Hachalutz. On the eve of World War II, Jews from Wizna emigrated to the US, Cuba, Argentina and Australia. Members of the Zionist youth movements emigrated to pre-State Israel and founded kibbutzim: Ramat Hakovesh, Einat, Yagur, Givat Hashlosha, Kfar Menachem, Ifat, Evron and Gvat. In addition former Wizners settled in Rishon Lezion, Tel-Aviv, Haifa, Jerusalem, Kfar Saba, Kfar Sirkin, Kiryat Haim, Petah Tikva, Ramat-Gan, Holon, Ganei Hadar, Ramat Zvi, Nahariya, Tel-Mond and elsewhere.