Turkish government first ever initiative for policewomen
Women serving in the police force "will be able to cover their heads" under their caps or berets so long as the headscarf is "the same colour as the uniform and without pattern", said the ruing published in the official gazette.
Rulings published in the official gazette come into force as soon as they are published.
The ruling Islamic-rooted Justice and Development Party (AKP) has long pressed for the removal of restrictions on women wearing the headscarf in the officially secular state.
Turkey lifted a ban on the wearing of the Muslim headscarf, known as the hijab, on university campuses in 2010.
It allowed female students to wear the headscarf in state institutions from 2013 and in high school in 2014.