Lam Luk Ka (Thai: ลำลูกกา, pronounced [lām lûːk kāː]) is a district (amphoe) of Pathum Thani province, part of Bangkok Metropolitan Region.

Originally, Lam Luk Ka was a vast grassland interspersed with scrubland and wetlands, as well as a habitat for various kinds of wildlife called "Thung Luang" (ทุ่งหลวง, "great field").

For the development of the country, King Chulalongkorn (Rama V) ordered the Khlong Rangsit to be cut through this area.

When the government formed the amphoe Lam Luk Ka in 1904, they cut the prefix "Bueng" (marsh or swamp) off.

Neighbouring districts are (from the north clockwise): Thanyaburi of Pathum Thani; Ongkharak of Nakhon Nayok province; Bang Nam Priao of Chachoengsao province; Nong Chok, Khlong Sam Wa, Sai Mai, and Don Mueang of Bangkok; and Mueang Pathum Thani.