Louis I (Italian: Loysi or Luigi; 1320 – May 26, 1362), also known as Louis of Taranto, was a member of the Capetian House of Anjou who reigned as King of Naples, Count of Provence and Forcalquier, and Prince of Taranto.

Louis gains the crown of Naples by marrying his first cousin, Queen Joanna I, whose prior husband, Andrew, had died as a result of a conspiracy that may have involved both of them.

Immediately after securing his status as her co-ruler, Louis successfully wrests away all power from his wife, leaving her a sovereign in name only.

Their disastrous marriage results in the birth of two daughters, Catherine and Frances, neither of whom survive their parents.

During their joint reign, Louis deals with numerous uprisings, attacks, and unsuccessful military operations; he is generally considered an inefficient monarch.

Following his death, Joanna resumes her power and refuses to share it with her subsequent husbands.