Jaroslav "Jarek" Janiš (born 8 July 1983) is a Czech auto racing driver.
He has taken three pole positions Brno, Dijon and the Hungaroring turning two of them into victories, teamed with Sascha Bert and occasionally former Formula One driver Andrea Montermini.
Prior to 2006 he had done six GT Championship races, four of them in a Ferrari 360 Modena for the Menx team in 2003, taking a total of 17.5 points.
By the end of 2001 he had a chance to fill in for countryman Tomáš Enge in the final round of the International Formula 3000 series at Monza.
He is a former race driver for A1 Team Czech Republic in the A1 Grand Prix series.