The Amazing 3, or Wonder 3 (Japanese: W3（ワンダースリー）, Hepburn: Wandā Surī, read as "Wonder Three"), is a Japanese comic series and a black-and-white Japanese animated television series created by Osamu Tezuka in the 1960s. It involves the adventures of three agents from outer space who are sent to Earth to determine whether the planet, a potential threat to the universe, should be destroyed. Landing on Earth, the characters take the form of a rabbit, a horse, and a duck, and make friends with a young human boy.The series was first published in print format as manga in Japan in 1965, and then spawned an animated television version, with different stories. The latter was dubbed in English and broadcast in the United States with a different theme song, as well as different closing and opening elements, under the title The Amazing 3. The American version was also aired in Australia in 1969 and in Spanish-speaking countries as Los tres espaciales. The Japanese-language animated version was first released on DVD in 2002, and then a full 10-DVD set in 2005.

The series tackles a number of issues that were unusual in animated cartoons of that period: in particular, ecological concerns and poverty and racial diversity. as well as popularizing multiple sci-fi elements such as aliens and space.

In 2017, a Kickstarter campaign for an English translation of the manga from Digital Manga made $82,137. The manga was released in 2020, under the title Wonder 3.