| Official Name: | Marianivka |
| Native Name: | Мар'янівка |
| Settlement Type: | Rural settlement |
| Subdivision Type: | Country |
| Subdivision Type1: | Oblast |
| Subdivision Name1: | Volyn Oblast |
| Subdivision Type2: | Raion |
| Subdivision Name2: | Lutsk Raion |
| Subdivision Type3: | Hromada |
| Subdivision Name3: | Marianivka settlement hromada |
| Area Total Km2: | 20.6 |
| Population As Of: | 2022 |
| Population Total: | 2676 |
| Population Density Km2: | 1362.62 |
| Pushpin Map: | Ukraine Volyn Oblast#Ukraine |
| Pushpin Map Caption: | Location of Marianivka |
| Coordinates: | 50.4542°N 24.8136°W |
| Elevation M: | 205 |
| Postal Code: | 45744 |
Marianivka (Ukrainian: Мар'янівка; Polish: Marianówka; Belarusian: Мар'янаўка|Marjanaŭka) is a rural settlement in Lutsk Raion, Volyn Oblast, western Ukraine. Marianivka is located on the Hnyla Lypa River. Population:
Marianivka was founded at the beginning of the 18th century, from Polish immigrants. Then the settlement was named Musin. But these lands have been inhabited much earlier. This is evidenced by archaeological finds. Specifically, in 1928 on the outskirts Marianivka, near the village Borochychi during a mound of the future rail Lviv - Lutsk at a depth of 1m was found a huge treasure of silver and gold Roman coins in the number of 1500 copies. However, this figure is probably understated, because, according to eyewitnesses, the total weight of the treasure was over 50 kg. Hamlet Musin was named until 1921, and in 1921 the Polish authorities renamed colony Musin to village Marianivka.
From 1940 till 1962 it was the center of Marianivka, Marianivka District, Volyn Oblast (province).
The status of urban settlement received in 1958.
In 1974 there were three factories: a sugar factory (the largest one), a cheese factory and a canning factory.[1]
After 1995 the cheese factory and the canning factory were closed.[2]
On 26 January 2024, a new law entered into force which abolished the urban-type settlement status, and Marianivka became a rural settlement.[3]
In Marianivka there are two schools, park, rail station, fire station, police department, hospital, post office, stores, bars, cafe, bank, gym, recently built supermarket and car wash, body shop and a local Marianivka soccer team.