The Japanese capital topped the 2015 safe cities index among 50 cities worldwide, which was published by the Economist Intelligence Unit (EIU) affiliated with British magazine The Economist.
Tokyo earned a score of 85.63 out of possible 100, followed by Singapore (84.61) and Osaka (82.36), said the index measured based criteria, including digital security, health security, infrastructure safety and personal safety.
Other cities joining the ranks of the top 10 included Stockholm, Amsterdam, Sydney, Zurich, Toronto, Melbourne and New York.
Seoul ranked 24th with a score of 70.9 behind Paris. Cities which were put behind Seoul included Abu Dhabi, Milano, Rome, Santiago and Doha.
Beijing came in 37th, six notches ahead of Moscow, while Jakarta ranked at the bottom of the list, three notches behind Johannesburg.