竞轮赛（日语：竞轮 / ケイリン），是场地单车的其中一个比赛项目。赛事起源于日本，故又会以其日语发音译为凯林或凯林赛。

竞轮赛是一组参赛选手在摩托车带领下完成一定圈数之后，在距离终点前600-700米进行终点冲刺的比赛。

选手在追逐在线按顺序并肩排列出发；当领骑员在快速骑行道接近追逐线时，发令员鸣枪示意比赛开始。最先冲过终点的选手为胜利者。

奥运会设有复活赛制度，容许首圈落败的参赛者再战，争夺重返正赛的机会。

Keirin(競輪 / ケイリン, [keiɽiɴ])"racing wheels" is a form of motor-paced cycle racing in which track cyclists sprint for victory following a speed-controlled start behind a motorized or non-motorized pacer. It was developed in Japan around 1948 for gambling purposes and became an official event at the 2000 Olympics in Sydney, Australia.