Pervomaysky District (Russian: Первома́йский райо́н) is an administrative and municipal district (raion), one of the sixteen in Tomsk Oblast, Russia. It is located in the east of the oblast. The area of the district is 15,600 square kilometers (6,000 sq mi). Its administrative center is the rural locality (a selo) of Pervomayskoye. Population: 18,947 (2010 Census); 21,260 (2002 Census); 23,350 (1989 Soviet census). The population of Pervomayskoye accounts for 29.8% of the district's total population.

The district is divided into six rural settlements: Komsomolsk, Kuyanovskoye [ru], Novomariinsky [ru], Pervomayskoye, Sergeevskoye [ru], and Ulu-Yulsky [ru]. These rural settlements are then further divided into 45 settlements.

Prior to Russian settlement, the area of present-day Pervomaysky was inhabited largely by Chulyms. Unconfirmed stories suggest that the first Chulym village in the region was around 1600. The district was first established on June 22, 1939 as the Pyshkino-Troitsky District. The district was abolished on December 17, 1962, but was restored in January 1965 under its current name.

Pervomaysky District is 15,554.18 square kilometers in area, of which, 83.5% is forest. The forests of Pervomaysky are composed primarily of birch and aspen trees, although cedar, spruce and fir trees are also common. The district sits on the eastern banks of the Chulym River, a tributary of the Ob River.

Pervomaysky District is rural in nature, home to four settlements with more than 1,000 people: Pervomayskoye, Komsomolsk, Belyay, and Ulu-Yul. Population decline is a threat to many smaller settlements in the area, with the district government recognizing 17 villages at risk. These villages, with populations of less than 100 people each, are also characterized by populations typically beyond the working age, as well as an absence, or under-developed social and economic infrastructure. The area is home to 11 villages which now lay abandoned due to population decline.

Pervomaysky's economy is largely dependent on agriculture and logging. There are a number of kolkhoz in the district, as well as a number of lumber firms. The district is home to 23,600 hectares of cropland, which primarily grow cereals, legumes, potatoes and vegetables. The area is also home to some deposits of natural minerals, such as sand, gravel, clay, chalk, brown coal, peat, and limestone.

The district is connected via rail to the nearby city of Asino.

• Frantsevo

• Государственная Дума Томской области. Закон №271-ОЗ от 22 декабря 2009 г. «Об административно-территориальном устройстве Томской области», в ред. Закона №153-ОЗ от 17 ноября 2014 г. «Об упразднении отдельных административно-территориальных единиц Томской области и о внесении изменений в отдельные законодательные акты Томской области в связи с упразднением отдельных административно-территориальных единиц Томской области». Вступил в силу по истечении 10 дней после дня официального опубликования. Опубликован: "Томские новости", №51, 24 декабря 2009 г. (State Duma of Tomsk Oblast. Law #271-OZ of December 22, 2009 On the Administrative-Territorial Structure of Tomsk Oblast, as amended by the Law #153-OZ of November 17, 2014 On Abolishing Several Administrative-Territorial Units in Tomsk Oblast and on Amending Various Legislative Acts of Tomsk Oblast Due to the Abolition of Several Administrative-Territorial Units in Tomsk Oblast. Effective as of the day which is 10 days after the day of the official publication.).
• Государственная Дума Томской области. Закон №204-ОЗ от 10 сентября 2004 г. «О наделении статусом муниципального района, сельского поселения и установлении границ муниципальных образований на территории Первомайского района», в ред. Закона №76-ОЗ от 19 июня 2014 г. «О внесении изменений в отдельные законодательные акты Томской области в части уточнения статуса населённых пунктов, входящих в состав городских, сельских поселений». Вступил в силу по истечении 10 дней со дня официального опубликования. Опубликован: "Официальные ведомости", №28(104), 13 сентября 2004 г. (State Duma of Tomsk Oblast. Law #204-OZ of September 10, 2004 On Granting the Status of a Municipal District, Rural Settlement to and on Establishing the Borders of the Municipal Formations on the Territory of Pervomaysky District, as amended by the Law #76-OZ of June 19, 2014 On Amending Parts of Various Legislative Acts of Tomsk Oblast Dealing with the Clarification of the Status of Inhabited Localities Within Urban, Rural Settlements. Effective as of after 10 days from the day of the official publication have passed.).