Percy (or Percy the Small Engine) may refer to:
- Percy - a green saddle-tank engine.
- Percy the Small Engine - the eleventh book in the Railway Series.
- Percy the Green Engine - a book published by Random House Books.
- Percy (Great Big Board Book) - a board book.
- Percy (Board Book) - a board book.
- Percy (Story Library Book) - a book in the My Thomas Story Library series.
- Percy (Engine Adventures) - a book in the Engine Adventures series.
- Percy (magazine story) - a magazine story published in 1997.
- Percy (2002 magazine story) - a magazine story published in 2002.
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