* Italian: Shares many similarities in grammar, vocabulary, and pronunciation with French.
* Spanish: Also shares significant similarities with French, particularly in vocabulary.
* Portuguese: Another close relative, though with more distinct pronunciation and grammar than Italian or Spanish.
* Catalan: Spoken in northeastern Spain and parts of France, Catalan is closely related to both French and Spanish.
* Romanian: Though geographically distant, Romanian is a Romance language closely related to French.
* Occitan: A regional language spoken in southern France, it is considered a sister language to French.
* Sardinian: A lesser-known Romance language spoken in Sardinia, Italy, it is considered one of the most conservative Romance languages and shares similarities with French.
These are just some of the closest relatives of French. Other Romance languages, such as Galician, Friulian, and Ladino are also related, but to a lesser degree.