An in-service program is a professional training or staff development effort, where professionals are trained and discuss their work with others in their peer group.

It is a key component of continuing medical education for physicians, pharmacists, and other medical professionals. It is also common among public servants including educators and public safety officials.

In-service program also refers to some programs offered to enlisted members of the military while they are in service.

Educators also have in-service programs where they discuss methods, cases, and workloads.