| Native Name: | Ломжинская губерния Gubernia łomżyńska |
| Conventional Long Name: | Łomża Governorate |
| Common Name: | Łomża |
| Subdivision: | Governorate |
| Nation: | Congress Poland |
| Year Start: | 1867 |
| Year End: | 1914 |
| P1: | Augustów Governorate |
| Flag P1: | Flag of the Russian Empire (black-yellow-white).svg |
| P2: | Płock Governorate |
| Flag P2: | Flag of the Russian Empire (black-yellow-white).svg |
| S1: | Bialystok-Grodno District |
| Flag S1: | Flag of the German Empire.svg |
| Image Map Caption: | Location in the Russian Empire |
| Capital: | Lomzha |
| Stat Year2: | 1897[1] |
| Stat Area1: | 10,545.2 |
| Stat Pop2: | 579,592 |
Łomża Governorate was an administrative-territorial unit (guberniya) of Congress Poland of the Russian Empire, with its capital in Łomża.
In 1867 territories of the Augustów Governorate and the Płock Governorate were divided into a smaller Płock Governorate, Suwałki Governorate (consisting mostly of the Augustów Governorate territories) and a recreated Łomża Governorate.
In 1893, a small amount of territory was transferred from the Łomża Governorate to the Warsaw Governorate.
It was divided into seven counties:
| County | County Seat | Major Towns | |
|---|---|---|---|
| Kolneński County | Kolno | Jedwabno • Stawiski | |
| Łomża County | Łomża | Nowogród • Śniadowo • Wizna • Zambrów | |
| Maków County | Maków | Krasnosielc • Różan | |
| Wysokie Mazowieckie County | Mazowieck | Ciechanowiec • Sokoły • Tykocin | |
| Ostrołęka County | Ostrołęka | Myszyniec | |
| Ostrów County | Ostrów | Andrzejewo • Brok • Czyżew • Nur | |
| Szczuczyn County | Szczuczyn | Grajewo • Radziłów • Rajgród • Wąsosz | |
| Number ! | percentage (%) ! | males ! | females | ----- | Polish | 448,065 | 77.3 | 220,787 | 227,278 | ----- | Yiddish | 91,236 | 15.74 | 44,669 | 46,567 | ----- | Russian | 27,941 | 4.82 | 25,233 | 2,708 | ----- | German | 4,651 | 0.8 | 2,387 | 2,264 | ----- | 3,832 | 0.66 | 3750 | 82 | ----- | 2,509 | 0.43 | 2,502 | 7 | ----- | Other[3] | 1,336 | 0.23 | 1,137 | 199 | ----- | Persons that didn't name their native language | 14 | >0.01 | 7 | 7 | ----- | Total | 579,592 | 100 | 300,487 | 279,105 | + |