Oceaneering International, Inc. is a subsea engineering and applied technology company based in Houston, Texas, U.S. that provides engineered services and hardware to customers who operate in marine, space, and other environments.

Oceaneering's business offerings include remotely operated vehicle (ROV) services, specialty oilfield subsea hardware, deepwater intervention and crewed diving services, non-destructive testing and inspections, engineering and project management, and surveying and mapping services. Its services and products are marketed worldwide to oil and gas companies, government agencies, and firms in the aerospace, marine engineering and mobile robotics and construction industries.