One star may refer to:

One-star rank, a senior military rank Star (classification), a grading of, for example, a hotel, restaurant, movie, TV show or theatre or musical work or performance One Star (record label), producers of Haciendo El Amor Con La Ropa One Star Hotel, a Philadelphia-based rock band Baire one star function, in mathematical real analysis

See also Lone Star (disambiguation) OnStar STAR 1 (disambiguation) Istar (disambiguation)

For other numbers of stars, see :Category:Star ranking systems