Defence Export Services Organisation
（重定向自DESO）
The Defence Export Service Organisation (DESO) is a UK government department within the Ministry of Defence which promotes arms exports by arms companies based in Britain.
The DESO has traditionally been headed by executives of defence companies who are officially seconded from their employer and continue to receive their salary. A third of the DESO's 500 staff are involved in support of the Al Yamamah contracts with Saudi Arabia. DESO is involved in the Defence Systems & Equipment International exhibition.