心跳过速，也称心动过速、心跳过快。是指心跳速度超出了正常范围，达到每分钟一百次以上的现象。剧烈的体育运动、紧张、焦虑或服用某些药物等可能会造成生理上的心跳过速，而心血管疾病、贫血、甲亢等疾病则会造成病理性心跳过速。根据发生部位的不同，心跳过速又可分为窦性、房型、交界性、室性。

Tachycardia, also called tachyarrhythmia, is a heart rate that exceeds the normal resting rate. In general, a resting heart rate over 100 beats per minute is accepted as tachycardia in adults. Heart rates above the resting rate may be normal (such as with exercise) or abnormal (such as with electrical problems within the heart).