Kappa Lambda Chi Military Fraternity Inc. (ΚΛΧ or KLC) is an international non-collegiate service and professional fraternity for men. It caters exclusively to the military members of all branches. Today, Kappa Lambda Chi has more than 20 chapters in the continental United States and abroad.

Kappa Lambda Chi was founded on July 4, 2013, in Clinton, North Carolina, as an alternative to traditional Greek letter organizations for male service members. Its founding members were Sir Zachary D. S. Wyatt II (Air Force veteran), William C. Dickey (Army retired), and James K. Jackson (Army retired). Six additional brothers which the fraternity denotes as "Sentinels", and whom together are called the "Original Nine".

Kappa Lambda Chi was the first Greek-lettered fraternity established and incorporated by U.S. Armed Forces men.

Kappa Lambda Chi's motto is Imperium Sine Fine. Its colors are purple and black. Its symbol is a lock. Its flower is the purple heart viola.

Fraternity members must currently serve or have previously served honorably in any branch of the United States Military.

Through volunteer service, Kappa Lambda Chi members support veterans in need in and around their local communities. Members work with homeless shelters, abuse centers, children centers, and other organizations that provide hands-on support to organizations that do not receive support from external sources. Members also honor those who have served this nation by placing wreaths on the graves of veterans and service members in each branch of the military including Merchant Marines, prisoners of war and those named missing in action.

Following is a list of Kappa Lambda Chi chapters. Active chapters are indicated in bold. Inactive chapters are in italics.