Melissa Altro (born May 16, 1982) is a Canadian actress best known for her voice acting. She has lent her voice to such animated roles such as Muffy Crosswire in the long-running 1996 PBS animated series, Arthur and the titular character in the 1997 series Pippi Longstocking.
Altro guest-starred as Alex on Are You Afraid of the Dark? in its fourth season episode "The Tale of the Room for Rent" and on Grossology as Paige. She starred as Heather in the 1995 film Kids of the Round Table and as Barb in The Woods (credited as "Missy Altro"). She has also voiced her Arthur character in the series Postcards from Buster, and specials Arthur's Perfect Christmas, and Arthur's Halloween. She also has voiced other characters in the Arthur show, and has the distinction of being the only child actress to stay on the programme as an adult. Melissa also provides the voice for Gretchen in the Teletoon/Disney XD animated series Camp Lakebottom (2013).
The Montreal-born Altro is an alumna of St. George's High School and McGill University (where she majored in English, Drama and Theatre), both located in her hometown.