Sinibaldo or Sinibaldi Ibi was an Italian painter, active in the early 16th century. He probably resided at Gubbio, and was a member of the Guild of Perugia in 1527. In 1507 he painted a Virgin and Child, between SS. Sebastian and Tibaldo. for one of the altar pieces in the cathedral of Gubbio, being then the companion of Orlando of Perugia. In the Gallery at Perugia is an Annunciation painted by him in 1528.
- Bryan, Michael (1886). In Robert Edmund Graves. Dictionary of Painters and Engravers, Biographical and Critical (Volume I: A-K). York St. #4, Covent Garden, London; Original from Fogg Library, Digitized May 18, 2007: George Bell and Sons. pp. page 695.