The Samadhi of Ranjit Singh (Punjabi: رݨجیت سنگھ دی سمادھی (Shahmukhi), ਰਣਜੀਤ ਸਿੰਘ ਦੀ ਸਮਾਧੀ (Gurmukhi); Urdu: رنجیت سنگھ کی سمادھی) is a 19th-century building in Lahore, Pakistan that houses the funerary urns of the Sikh Maharaja Ranjit Singh (1780 – 1839).

Its construction was started by his son and successor, Maharaja Kharak Singh, after the ruler's death in 1839, and completed nine years later.

Construction of the mausoleum began in August 1839 but its completion was delayed due to infighting within the Sikh Empire between different factions.

[citation needed] The new British-rulers of Punjab, having annexed the Sikh Empire in 1849, undertook repairs of the mausoleum, which was completed in 1851.

The dome is decorated with Nāga (serpent) hood designs - the product of Hindu craftsmen that worked on the project.