L'Haÿ-les-Roses (French pronunciation: [laj le ʁoz] ⓘ) is a commune in the southern suburbs of Paris, France.

[1] L'Haÿ-les-Roses owes the second part of its name to the Roseraie du Val-de-Marne rose garden located there.

The name was recorded for the first time in a charter of Charlemagne in 798 as Laiacum, sometimes also spelt Lagiacum, meaning "estate of Lagius", a Gallo-Roman landowner.

In May 1914 the name of the commune became officially L'Haÿ-les-Roses (meaning "L'Haÿ the roses") in honour of the Roseraie du Val-de-Marne (or Roseraie de L'Haÿ), the renowned rose garden created in 1899 by Jules Gravereaux, one of the founders of the Bon Marché department store in Paris.

[7] Senior high schools/sixth-form colleges are in surrounding municipalities:[7] L'Haÿ-les-Roses is twinned with: