Klentnice (German: Klentnitz) is a municipality and village in Břeclav District in the South Moravian Region of the Czech Republic. It has about 500 inhabitants.

Klentnice is located about 20 kilometres (12 mi) northwest of Břeclav and 37 km (23 mi) south of Brno. It lies in the Mikulov Highlands. The village is situated on the eastern slope of the hill Stolová hora at 459 m (1,506 ft) above sea level. The highest point of the municipality is the slope of the hill Obora with an elevation of about 465 m (1,526 ft). Klentnice is located in the Pálava Protected Landscape Area.

Grave findings of the La Tène culture are documents of an early settlement. In the times of Great Moravia, the area was inhabited by the Slavs. After the empire fell, the inhabitants were replaced by German colonists. The first written mention of Klentnice is from 1322, when it was part of the Mikulov estate.

As a part of the Mikulov estate, it was owned by the House of Liechtenstein. They contributed to cultural and ethnic enrichment when they invited Jews and Anabaptists. In 1560, the Liechtensteins sold the estate to the Kerecseny family. In 1575, the estate was donated to the Dietrichstein family by Emperor Maximillian II. During their rule in the second half of the 17th century and in the 18th century, the estate prospered and developed.

After World War I, the multi-ethnic state Austria-Hungary was split up. By the Treaty of Saint-Germain-en-Laye, Klentnice became part of the newly established Czechoslovakia. Following the Munich Agreement, the municipality belonged to the Reichsgau Niederdonau until 1945. After World War II, the municipality fell back to Czechoslovakia and the German population was expelled. The town was recolonized by ethnic Czechs mainly from Moravian Slovakia.

Historical population

Year Pop. ±% 1869 434 —     1880 494 +13.8% 1890 446 −9.7% 1900 525 +17.7% 1910 609 +16.0%	Year Pop. ±% 1921 630 +3.4% 1930 556 −11.7% 1950 373 −32.9% 1961 438 +17.4% 1970 444 +1.4%	Year Pop. ±% 1980 484 +9.0% 1991 512 +5.8% 2001 558 +9.0% 2011 518 −7.2% 2021 484 −6.6%
Source: Censuses

There are no railways or major roads passing through the municipality.

The Church of Saint George was first mentioned in 1582. The today's structure was built in 1783–1785.

The ruin of the Sirotčí hrádek castle is located above the village. The castle was founded at the turn of 13th and 14th centuries. It was abandoned before 1590 and referred to as completely desolated in 1629.

• Official website