The Tsivilsk (Russian: Цивильскaя, Tsivilskaya) is a pig breed from Russia.

The breed group was developed by crossing native Chuvash pigs with Large White boars. Numbers were 28 000 in 1960, 41 000 in 1964, 21 000 in 1969 and 24 000 in 1974. As of 1 January 1980, the total population of purebred animals was 35 600, including 616 breeding boars, 35 boars on the test, 3700 breeding sows and 2300 sows on the test.

In Tsivilsk pigs the head is heavier than in the Large White, with a wide forehead and slightly dished face, rather a long snout and medium-size ears tilted forward. The back is straight and even. The colour is white.

The 1983 evaluation gave the following results; live weight of 36-month-old boars – 299 kg, body length – 177 cm, sow live weight – 229 kg, body length – 160 cm, litter size – 10.5, weight of month-old litter – 47 kg, weight of two-month-old litter – 136 kg.

The 1983 performance test gave the following results: time to reach 100 kg body weight – 196 days, feed/kg gain – 3.90 fodder units, backfat thickness – 30 mm, length of the carcass – 96 cm, ham weight – 10.3 kg.

The breed group’s champion in 1984 was the sow Ula 374 owned by the Chuvash agricultural experimental station in the Chuvash Autonomous Republic, which gave the following results at the age of 56 months: body weight – 265 kg, body length – 166 cm, litter size – 14, the weight of one-month-old litter – 82 kg, weight of two-month-old litter – 187 kg. During the fattening performance test, its offspring gave the following results: time to gain 100 kg body weight – 187 days, feed/kg gain – 3.83 fodder units, backfat thickness – 28 mm, length of the carcass – 97 cm, ham weight – 10.6 kg.

The breed group consists of 11 boar lines and 21 sow families.

The group is raised and improved at the Chuvash agricultural experiment station and 4 pig breeding units on collective farms in the Chuvash ASSR.

The Tsivilsk breed group is used in crossing with the Large White in the Chuvash Republic breeding system. The breeding is directed toward improving maternal quality and fattening performance.