Hiatus may refer to:

• A period of time where one is on a break
• A break or interruption in the continuity of a work, series, action, etc. (See recess)
• Hiatus (anatomy), a natural fissure in a structure
• A small difference in pitch between two musical tones (see Interval (music))
• Hiatus (linguistics), a phonological term referring to the lack of a consonant separating two vowels in separate syllables, as in co-operation
• Hiatus (television), a break of several weeks in television scheduling
• Hiatus (band), a Belgian crustcore band
• A euphemism for unemployment
• "Hiatus" (30 Rock), an episode of the television series 30 Rock