|Birth name||Mechery Louis Ousephachan|
|Born||13 September 1955|
|Origin||Ollur, Thrissur, Kerala, India|
|Years active||1985 – present|
Mechery Louis Ouseppachan (born 13 September 1955), mononymously known as Ousepachhan, is an Indian film composer and singer who mainly sets scores for Malayalam films. He is a recipient of National Award, Filmfare Award and Kerala State Film Awards for his numerous film soundtrack albums and background scores.