Lat Jor Ngoné Latir Jop (Wolof: Lat Joor Ngoone Latiir Joop; French: Lat Dior Ngoné Latyr Diop; c. 1842–1886) was a nineteenth-century damel (king) of Cayor, a Wolof state that is today in Sénégal. He is today a national hero of Senegal for his resistance to French colonialism.

Lat Jor was the son of Sahewer Sohna Mbay (Sakhéwère Sokhna Mbaye) and the Linguère royal Ngoné Latyr Fall [fr] (Ngoné Latyr Fall), Ngoné Latyr Fall was from the Wolof Dynasty of Paleen Dedd which ruled the two kingdoms of Cayor and Baol. Lat Jor belonged to the Geej or Guedj Wolof maternal dynasty that had supplied many of the rulers of Cayor and Baol over the preceding centuries. The matriarch of that matriclan was the Wolof Lingeer Ngoné Dièye, a Princess from Tubé Dieye in Gandiol. Gandiol is a Wolof region in the north of Senegal that borders Mauritania. Lat Jor was a direct maternal descendant of Lingeer Ngoné Dièye of Tubé Dieye.

Eligible to be elected based on his maternal lineage, Lat Jor was the first damel who was not from the 'Fall' family on his paternal side, being a 'Diop' instead.

Information on Lat Jor's life before his election as damel is known mostly through oral histories kept by griots. He was born in 1842 in Keur Amadou Yalla in northeastern Cayor. Raised in a nominally Muslim milieu, he studied at a Quranic school as a child. In 1859 at age 17 he was already involved in politics.

The damel Majojo (or Ma-Dyodyo) was installed in 1861 by the French. His opponents resisted, defeating the damel in battle the next year and installing the young Lat Jor in his place. After fighting a rearguard action at the battle of Ndari in early December 1863, Lat Jor crushed Majojo and his French allies in the battle of Ngolgol later that month. In January 1864, defeated at Loro, he was ultimately forced to flee Cayor. He tried unsuccessfully to find shelter with the kings of Sine and Saloum before turning to the marabout of Saloum, Maba Diakhou Bâ. Meanwhile, Louis Faidherbe deposed the ineffective Majojo, annexed Cayor, and divided it into five provinces.

In order to cement his alliance with Maba, Lat Jor formally became of the cleric's talibes, or disciples. This was an important break from Cayor's relatively secular royal traditions. He remained a practicing Muslim for the rest of his life.

Lat Jor led Maba's armies, reinforced with his ceddo warriors, in the conquests of the states of Baol and Djolof in July 1865. An alarmed French governor Émile Pinet-Laprade marched on Saloum at the head of 1,600 regulars, 2,000 cavalry, and 4,000 volunteers and footsoldiers. At the Battle of Pathé Badiane outside of Nioro, however, the marabout forces drove the French back towards their fortifications at Kaolack. They couldn't, however, conquer the Serer Kingdom of Sine and were defeated at The Battle of Fandane-Thiouthioune (18 July 1867) by Maad a Sinig Kumba Ndoffene Famak Joof.

In 1868 Lat Jor and his troops returned to Cayor to attempt to regain independence. He allied with Shaikh Amadou Ba and defeated the French in the battle of Mekhe on July 8th, 1869.