Tomáš Janku (Czech pronunciation: ['toma?? 'ja?ku?]; born 27 December 1974 in Jablonec nad Nisou) is a former Czech high jumper.
His personal best jump is 2.34 metres, achieved at the 2006 European Championships in Gothenburg.
In 2010, he married Czech pole vaulter Katerina Badurová.
His older brother Jan Janku is also a prominent high jumper.