国际航道测量组织（International Hydrographic Organization、IHO）成立于1921年，前身是国际航道局。1967年在摩纳哥召开的第九届国际航道测量大会上制定了《国际航道测量组织公约》。

国际航道测量组织主要为协调各国航道测量部门之间的活动，统一海图和航海文档。在2006年，国际航道测量组织有76个会员国家和地区。

The International Hydrographic Organization (IHO) is the inter-governmental organisation representing hydrography.

The principal role of the IHO is to ensure that the world’s seas, oceans and navigable waters are properly surveyed and charted. It does this through the setting of international standards, the co-ordination of the endeavours of national hydrographic offices, and through its capacity building programme.