Miss (pronounced ) is an English language honorific traditionally used only for an unmarried woman (not using another title such as "Doctor" or "Dame"). Originating in the 17th century, it is a contraction of mistress, which was used for all women. A period is not used to signify the contraction. Its counterparts are Mrs., usually used only for married women, and Ms., which can be used for married or unmarried women.

Man In Space Soonest (MISS) was a United States Air Force (USAF) program to put a man into outer space before the Soviet Union did. The program was cancelled on August 1, 1958, and was replaced by NASA's Project Mercury. Only two men from the program would actually reach outer space. The first, Joseph A. Walker, did so twice in two X-15 rocket plane tests in 1963. Another, Neil Armstrong, became a NASA astronaut in 1962 and became the first person to walk on the Moon in 1969.

• Miss is an honorific title of unmarried woman, see also Mistress (form of address)

Miss or MISS may also refer to:

• Man In Space Soonest, a U.S. Airforce space program that eventually became Project Mercury.
• MISS (OS), an early Soviet operating system.
• Mississippi, a state of the United States.
• Miss World, oldest surviving major international beauty pageant
• Miss Universe
• Miss Press, an imprint of the German group VDM Publishing devoted to the reproduction of Wikipedia content
• Cache MISS
• Microbially induced sedimentary structure, a sedimentary structure formed by the interaction of microbes with sediment