The Sea Organization or Sea Org is the senior-most status of staff within the Church of Scientology network of corporations, but is not itself incorporated. In the 1960s and 1970s, the Sea Org was started as L. Ron Hubbard's private navy, and adopted naval uniforms and ranks. Today, all Scientology management organizations are exclusively staffed with Sea Org members. The Sea Org maintains strict codes for its members, beginning with a symbolic billion-year pledge of service to Scientology upon initiation. David Miscavige, the leader of Scientology, is the highest-ranking Sea Org officer with the rank of captain. The rank of commodore is permanently reserved for the late L. Ron Hubbard, founder of Scientology. Some ex-members and scholars have described the Sea Org as a totalitarian organization marked by intensive surveillance and a lack of freedom.

The Church of Scientology network operates as a multinational conglomerate of companies with personnel, executives, organizational charts, chains of command, policies and orders.Religious Technology Center is the most powerful executive organization within the Scientology empire, and its current chairman, David Miscavige, is widely recognized as the effective head of the church.