The Nintendo DS (sometimes abbreviated NDS or DS) is a handheld game console developed and manufactured by Nintendo. It was released in 2004 in Canada, U.S., and Japan. The console features a clamshell design, similar to the Game Boy Advance SP, with two LCD screens inside - one of which is a touchscreen. The Nintendo DS also features a built-in microphone and supports wireless IEEE 802.11 (Wi-Fi) standards, allowing players to interact with each other within short range (10-30 m, depending on conditions) or online with the Nintendo Wi-Fi Connection service, which launched later in the console's lifespan. This was the first Nintendo console to be released in North America prior to Japan.

The system's code name was Nitro, and this can be seen in the model codes that appear on the unit. The console's name officially refers to "Developers' System", in reference to the new game design the system was meant to inspire, and "Dual Screen", the system's most obvious and distinct feature.

On March 2 2006, Nintendo released the Nintendo DS Lite, a redesign of the Nintendo DS, in Japan. It was later released in North America, Europe, and Australia in June 2006. The DS Lite is a slimmer and lighter version of the Nintendo DS and has brighter screens. Nintendo of America refers to the older model as the "original style" Nintendo DS.