The Tale of Squirrel Nutkin is a children's book written and illustrated by Beatrix Potter and first published by Frederick Warne & Co. in August 1903. The story is about an impertinent red squirrel named Nutkin and his narrow escape from an owl called Old Brown. The book followed Potter's hugely successful The Tale of Peter Rabbit, and was an instant hit. The now-familiar endpapers of the Peter Rabbit series were introduced in the book.

Helen Beatrix Potter was an English writer, illustrator, natural scientist, and conservationist. She is best known for her children's books featuring animals, such as The Tale of Peter Rabbit, which was her first commercially published work in 1902. Her books, including 23 Tales, have sold more than 250 million copies. An entrepreneur, Potter was a pioneer of character merchandising. In 1903, Peter Rabbit was the first fictional character to be made into a patented stuffed toy, making him the oldest licensed character.