HD Hyundai Heavy Industries Co., Ltd. (HHI; Korean: HD현대중공업; RR: Eichidi Hyeondae Junggongeop) is the world's largest shipbuilding company and a major heavy equipment manufacturer.

HHI was founded in 1972 by Chung Ju-yung as a division of the Hyundai Group, and in 1974, completed building its first ships.

The company has a partnership with Capital Product Partners to create four specialized ships with equipment for ocean-based carbon capture and storage to be delivered in 2025 and 2026 and at a cost of $300 million.

[9] The name is an informal romanisation of the Korean 현대 (hyeondae) meaning "contemporary" or "modern", which was Chung's vision for the group of companies that he founded.

On 11 July 2024, Hyundai Heavy Industries became the first Korean shipbuilder to sign a master ship repair agreement (MSRA) with Naval Supply Systems Command (NAVSUP), qualifying to participate in the U.S. Navy's MRO business.