H-IIA (H-2A) is an active expendable launch system operated by Mitsubishi Heavy Industries (MHI) for the Japan Aerospace Exploration Agency.

These liquid fuel rockets have been used to launch satellites into geostationary orbit; lunar orbiting spacecraft; Akatsuki, which studied the planet Venus; and the Emirates Mars Mission, which was launched to Mars in July 2020.

As of September 2024[update], H-IIA rockets were launched 49 times, including 43 consecutive missions without a failure, dating back to 29 November 2003.

[3] The H-IIA is a derivative of the earlier H-II rocket, substantially redesigned to improve reliability and minimize costs.

A rocket with increased launch capabilities, H-IIB, is a derivative of the H-IIA family.