Lab on a Chip is a peer-reviewed scientific journal which publishes original (primary) research and review articles on any aspect of miniaturisation at the micro and nano scale. Lab on a Chip is published twice monthly by the Royal Society of Chemistry (RSC). According to the Journal Citation Reports, the journal has a 2023 impact factor of 6.1.

The journal publishes research at the micro- and nano-scale across a variety of disciplines including chemistry, biology, bioengineering, physics, electronics, clinical science, chemical engineering, and materials science focusing on lab on a chip technologies.