Yes, you can use your Suica card on almost all city buses in Japan's major metropolitan areas. In 2026, Japan's IC cards (including Suica, Pasmo, and Icoca) are fully integrated, meaning a Suica card works on buses in Tokyo, Kyoto, Osaka, and beyond. When boarding a bus in Tokyo, you typically tap your card on the reader near the driver as you enter (flat-fare) or both as you enter and exit (distance-based). In Kyoto, you tap upon exiting. The card automatically calculates the fare, eliminating the need to fumble for exact change or use the bus's coin-exchange machine. For international tourists, the Welcome Suica or the Digital Suica on an iPhone/Apple Watch is the most convenient way to tap-and-go. Just remember that while you can use Suica to pay, you cannot always "recharge" the card on the bus itself—most riders top up their balance at train stations or at convenience stores like 7-Eleven or Lawson before boarding the bus.