Lamerd (Persian: لامرد) is a city in the Central District of Lamerd County, Fars province, Iran, serving as capital of both the county and the district.

Before becoming a city, Lamerd was a small village in the Tarakmeh rural district of Kangan, Bushehr County. Administrative reforms later made it a district of Larestan County, and in 1989 it was officially upgraded to Lamerd County. Today, the county consists of three districts, seven rural districts, and around 140 villages.

Archaeological evidence indicates that Lamerd has a long and rich history. The Kenaru mound near Roknabad village dates back more than 5000 years, while several ancient mounds in Allamroudasht have yielded decorated buff-colored pottery. Remains from the Achaemenid period, including column capitals from former palaces or pavilions also have been discovered.

During the Parthian and Sasanian eras, Lamerd served as an important military center, with numerous forts and fire temples constructed throughout the region. Some of these religious sites still survive in Khafrouyeh, Allamroudasht, and Ashkanan. In the Islamic period, the Lamerd pass became a major route for migrating and traveling peoples, whose diverse influences helped shape the region’s rich cultural heritage.

Lamerd was historically part of the region of Irahistan. The people of Lamerd are known as the Achomi people.

At the time of the 2006 National Census, the city's population was 21,365 in 4,921 households. The following census in 2011 counted 25,131 people in 6,572 households. The 2016 census measured the population of the city as 29,380 people in 8,529 households.

Lamerd has a hot desert climate (BWh) according to the Köppen climate classification.

The city's main industries are based on its rich natural gas sources. Tabnak, Homa, Shanol, Varavi are important local gas zones.