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Etymology

The origin of Lahore's name is unclear. The city's name has been variously recorded by early Muslim historians as Luhawar, Lūhār, and Rahwar. The Iranian polymath and geographer, Abu Rayhan Al-Biruni, referred to the city as Luhāwar in his 11th century work, Qanun, while the poet Amir Khusrow, who lived during the Delhi Sultanate period, recorded the city's name as Lāhanūr. Yaqut al-Hamawi records the city's name as Lawhūr, mentioning that it was famously known as Lahāwar. Persian historian Firishta mentions the city as Alahwar in his work, with al-Ahwar being another variation.

One theory suggests that Lahore's name is a corruption of the word Ravāwar, as R to L shifts are common in languages derived from Sanskrit. Ravāwar is the simplified pronunciation of the name Iravatyāwar, a name possibly derived from the Ravi River, known as the Iravati River in the Vedas. Another theory suggests the city's name may derive from the word Lohar, meaning "blacksmith".

According to a legend, Lahore's name derives from Lavpur or Lavapuri (City of Lava), and is said to have been founded by Prince Lava, the son of Sita and Rama. The same account attributes the founding of nearby Kasur to his twin brother Kusha, though it was actually established in the 16th century.