Explorer Two, Explorer II, Explorer 2, or variation, may refer to:
Vehicles Explorer II (1935), a manned high-altitude balloon from National Geographic and the U.S. Army that set the manned high altitude record (1989), a cruise ship Raven Explorer II, a U.S. autogyro kitplane JUST Explorer II, a Chinese scientific research autonomous underwater vehicle Foday Explorer II, a Chinese SUV
Other uses Explorer 2 (1958), a failed U.S. Army exploratory satellite Rolex Explorer II (1971), a wristwatch developed for explorers and adventurers Charter Arms Explorer II pistol, a .22 calibre pistol
See also Explorer (disambiguation) Explorer 11 (1961), a NASA space telescope (1966), a hydrographic survey ship