| Zarasai District Municipality | |
| Native Name: | Zarasų rajono savivaldybė |
| Native Name Lang: | lt |
| Settlement Type: | Municipality |
| Image Map1: | ZarasuRajonoSeniunijos.png |
| Map Caption1: | Map of Zarasai district municipality |
| Subdivision Type: | Country |
| Subdivision Name: |  Lithuania |
| Subdivision Type1: | Ethnographic region |
| Subdivision Name1: | Aukštaitija |
| Subdivision Type2: | County |
| Subdivision Name2: | Utena County |
| Parts Style: | para |
| Parts Type: | Elderships |
| P1: | 10 |
| Seat Type: | Capital |
| Seat: | Zarasai |
| Unit Pref: | Metric |
| Area Total Km2: | 1334 |
| Area Rank: | 24th |
| Population Total: | 15,114 |
| Population As Of: | 2021[1] |
| Population Rank: | 52nd |
| Population Density Km2: | auto |
| Population Density Rank: | 58th |
| Timezone1: | EET |
| Utc Offset1: | +2 |
| Timezone1 Dst: | EEST |
| Utc Offset1 Dst: | +3 |
| Area Code Type: | Telephone code |
| Area Code: | 385 |
| Blank Name Sec1: | Major settlements |
Zarasai District Municipality is one of 60 municipalities in Lithuania. It borders with Latvia and Belarus.
It has significant Russian minority population in Lithuania, with sixth of the population claiming Russian ethnicity.[2]
The district has the following localities:
Biggest population (2001):
30% of the territory is covered by forests (about 65% of those are pine forests), about 10% by lakes. The district has about 300 lakes. The most famous lake is Lake Sartai for its winter horse races. Part of the biggest lake in Lithuania, Lake Drūkšiai, is also in the district. Other three lakes are among the ten largest lakes in Lithuania. There are 20 artificial lakes, the biggest one is Antalieptė Lagoon (Lithuanian: Antalieptės marios). It is a unique artificial lake in Lithuania. It was formed when a dam on Šventoji River was built and 27 different lakes joined to form one lagoon. It has about 50 islands. There are 8 rivers, the longest is Šventoji River (almost 45 km in the district). The district has two regional parks, Sartai and Gražutė.
The district is rich in beautiful nature and could become a tourist destination. However, the geographic location is very inconvenient. Zarasai district municipality is away from major highways. Also, it is quite far away from the capital, Vilnius. Vilnians would rather choose numerous lakes in Molėtai district municipality or Aukštaitija National Park for recreation.
The district has many hill forts built in the 9-12th centuries. They were used for defence against Livonian Order attacking from Daugavpils.
Stelmužė Oak, the oldest tree in Lithuania, grows in the district.