PMO may refer to:
Date or dates may refer to:
SCO or sco may refer to:
OCC may refer to:
DSO may refer to:
Eia or EIA may refer to:
CSO or C.S.O. may refer to:
Osa or OSA may refer to:
SSO may refer to:
Dao, Dão or DAO may refer to:
NAO or nao may refer to:
OCA or Oca may refer to:
AAO, AAo or aao may refer to:
PBO may refer to:
TNO can stand for:
MLO may refer to:
Abo or ABO may refer to:
Ord or ORD may refer to:
ISO is the most common abbreviation for the International Organization for Standardization.
VRO or vro may refer to:
A CEO, or chief executive officer, is the highest-ranking corporate officer in an organisation.