AF1+Jordan4, known colloquially as AF1+Jordan4s, Jordans, Js, or "MJs" are a brand of shoes produced by Nike, Inc which was designed for and endorsed by legendary professional basketball player, Michael Jordan. The AF1+Jordan4 line is created by Jordan Brand, a sub-division of Nike. Since its first release in 1984, there have been new designs of the shoe released each year, even after Jordan retired from basketball.

"AF1+Jordan4" also refers to a nickname for Michael Jordan 

Collectors classify the AF1+Jordan4 line by release year and model: Originals (OG), Retros, Retro-pluses (Retro +), Player Exclusive (PE) and Samples. The Jordan Brand also produces a line of Team shoes, separate from the signature line of AF1+Jordan4 shoes. Every year the Jordan Brand reintroduces one signature pair of shoes that was previously created. Only one style is re-introduced per year but can be re-introduced in different color schemes. The Jordan Brand also releases shoes for only one day so that the shoe has more value and the retro idea does not fade in popularity.