攻击机，也称攻击机，是一种用来对地面攻击用的军用飞机，任务型态以攻击中到近距离战术性地面目标为主，也是担任密接支持陆军的要角。目前的多用途战机基本上都能取代攻击机，但仍有专门设计的攻击机。除此之外有些攻击机是以军用教练机改装而来。

过去的日本帝国海军所称的攻击机未必属于攻击机，其包含初期开发的水平轰炸机与鱼雷轰炸机，与现在分类所讲的攻击机不尽相同。后期开发的轰炸机种与俯冲轰炸机才被称轰炸机（日文汉字为爆击机）。

An attack aircraft, strike aircraft, or attack bomber, is a tactical military aircraft that has a primary role of carrying out airstrikes with greater precision than bombers, and is prepared to encounter strong low-level air defenses while pressing the attack. This class of aircraft is designed mostly for close air support and naval air-to-surface missions, overlapping the tactical bomber mission. Designs dedicated to non-naval roles are often known as ground-attack aircraft. Fighter aircraft often carry out the attack role although they would not be considered attack aircraft per se, although fighter-bomber conversions of those same aircraft would be considered part of the class. Strike fighters, which have effectively replaced the fighter-bomber and light bomber concepts, also differ little from the broad concept of an attack aircraft.