An appoggiatura (/əˌpɒəˈtjʊərə/ ə-POJ-ə-TEWR, Italian: [appoddʒaˈtuːra]; German: Vorschlag or Vorhalt; French: port de voix) is a musical ornament that consists of an added non-chord note in a melody that is resolved to the regular note of the chord. By putting the non-chord tone on a strong beat, (typically the first or third beats of the measure, in 4/4 time) this accents the appoggiatura note, which also delays the appearance of the principal, expected chord note. The added non-chord note, or auxiliary note, is typically one degree higher or lower than the principal note, and may be chromatically altered. An appoggiatura may be added to a melody in a vocal song or in an instrumental work.

The term comes from the Italian verb appoggiare, "to lean upon". The appoggiatura is often used to express emotional "yearning". It is also called a long appoggiatura to distinguish it from the short appoggiatura, the acciaccatura. An ascending appoggiatura was previously known as a forefall, while a descending appoggiatura was known as a backfall.