Lainy is a ♀ female name.
Lainy is a variant of Laney, an English short form of Elaine or Helen.
Lainy means “torch” (from ancient Greek “helánē/ἑλάνη”) and “beautiful”, “light”, “bright” and “shining” (from ancient Greek “hēlios/ἥλιος” = sun/sunlight/sunshine).