Singapore, Malaysia / Grabtaxi / 34
With her ride-hailing app Grab, Hooi Ling Tan has transformed mobility in Southeast Asia. Her green taxis are now making their way through traffic in dozens of cities throughout Asia. Like Uber, Grab also enables users to book rides with drivers of private cars and motor scooters. Since 2011, more than two billion rides have been logged through the app, which started as Myteksi in Kuala Lumpur. Tan, a mechanical engineer, and her team are now based in Singapore. Valued at 6 billion dollars, the young company is targeting a billion dollars in revenue by the end of 2018.