No , it comes from an 18th century poem by Jane Taylor
twinkle twinkle little star
Mozart
The lyrics are from a poem written by Jane Taylor. The tune is by Mozart.
Mozart
Twinkle Twinkle little star
Mozart when he was 5 years old (really!)
It is a common misconception that Mozart wrote Twinkle Twinkle Little Star at the age of four or five. He did not. This is the age he was when the original French folk song was written under the name of "Ah ! vous dirai-je, Maman", in 1761. Mozart did, however, write a series of variations on this melody when he was much older. The words to "Twinkle Twinkle" were penned by Jane Taylor, in 1806.
'Twinkle, Twinkle, Little Star' is NOT by Mozart. This is a myth. He did, however, write a set of variations on the tune later used for the song. Mozart would have known the tune under its original French title 'Ah, vous derai-je, mamam'.
Variations on "Ah, vous dirais-je, Maman" (a French song). By Mozart
That would be Wolfgang Amadeus Mozart. http://en.wikipedia.org/wiki/Twinkle_Twinkle_Little_Star
Mozart never wrote Happy Birthday. However, he did write a similar tune to "Twinkle Twinkle Little Star" when he was five.
Well many believe that is was written as a lullaby for children :)