Regional Building Committees (RBC) are organized by Jehovah's Witnesses in many countries to oversee the construction and maintenance of their places of worship, known as Kingdom Halls and Assembly Halls. The objective of such committees, which usually consist of five to seven persons, often with experience in the construction trades, is to coordinate the efforts of those involved so as to provide attractive and functional facilities that are financially viable.

Regional Building Committees cooperate with local congregations of Jehovah's Witnesses that are seeking to build or renovate a place of worship, under the direction of the local branch office of Jehovah's Witnesses.

Committees help in assessing the suitability of a possible construction site, purchasing the land and materials and coordinating the efforts of volunteers from the wider area.

As is true throughout the Jehovah's Witnesses organization, members of a Regional Building Committee work voluntarily and receive no remuneration for their work.

The work of the Regional Building Committees has made it possible for Jehovah's Witnesses to build or renovate places of worship in a very short time, sometimes as little as two days.