A gag-a-day comic strip is the style of writing comic cartoons such that every installment of a strip delivers a complete joke or some other kind of artistic statement. It is opposed to story or continuity strips, which rely on the development of a story line across a sequence of the installments.^[1] Most syndicated comics are of this type.^[2] Another term for this distinction is non-serial (gag-a-day) vs. serial strips.^[3]

Compared to single-panel cartoons ("gag panels"), gag-a-day comic strips can deliver a better timing for the narrative of a joke.^[2]

The distinction between continuity and gag-a-day strip may be blurred: a continuous story may still be delivered in the gag-a-day format.^[2] In fact, Lynn Johnston recommends it for story strips, to keep the readership and engage new audience which may be not very familiar with the background of the story.^[4]