Dlouhá Lhota is a municipality and village in Mladá Boleslav District in the Central Bohemian Region of the Czech Republic. It has about 500 inhabitants.

Dlouhá Lhota is located about 9 kilometres (6 mi) east of Mladá Boleslav and 51 km (32 mi) northeast of Prague. It lies in the Jičín Uplands, in a predominantly flat agricultural landscape. The highest point is at 242 m (794 ft) above sea level, located on the southern municipal border. The Klenice River flows through the northern part of the municipal territory. The Vorlík pond is on the edge of the village.

The first written mention of Dlouhá Lhota is from 1383. It belonged to the Březno estate and shared its owners and destiny. Until 1416, the estate was owned by the Wartenberg family, then it was sold to Jindřich Waldstein, who soon sold it to lower nobleman Jan Lapáček. After it changed hands twice in the 15th century, it was acquired by Jindřich Hložek of Žampach. He died in 1543 and a year later, the estate was inherited by the Bubna of Litice family. They owned the estate until 1749.

Historical population

Year Pop. ±% 1869 404 —     1880 459 +13.6% 1890 402 −12.4% 1900 374 −7.0% 1910 474 +26.7%	Year Pop. ±% 1921 436 −8.0% 1930 421 −3.4% 1950 342 −18.8% 1961 327 −4.4% 1970 326 −0.3%	Year Pop. ±% 1980 324 −0.6% 1991 305 −5.9% 2001 311 +2.0% 2011 392 +26.0% 2021 450 +14.8%
Source: Censuses

Dlouhá Lhota is located on the railway line Mladá Boleslav–Mladějov.

There was a wooden belfry, but after it was destroyed around 1970, there are no cultural monuments in the municipality.

• Official website