No, the Osaka City Bus is not covered by the standard Japan Rail (JR) Pass. The JR Pass is exclusively for transportation services operated by the Japan Railways Group. The Osaka City Bus system (and the Osaka Metro) are operated by the Osaka Metro Group, which is a private entity and not part of the JR network. This is a common point of confusion for tourists; while your JR Pass will get you to Osaka via the Shinkansen and allow you to use the JR Osaka Loop Line and the JR Sakurajima Line (to Universal Studios), it will not work on the green-and-white city buses or the subway lines. To travel on the Osaka City Bus, you should use an IC card like Suica, Pasmo, or Icoca, which allows you to "tap and go." Alternatively, if you plan on doing a lot of inner-city travel in a single day, the "Enjoy Eco Card" is a great investment, as it provides unlimited rides on the Osaka Metro and City Buses for a flat daily rate (usually 820 yen on weekdays or 620 yen on weekends). While the JR Pass is excellent for inter-city travel, you will almost certainly need a secondary payment method for the specific local transit within the city of Osaka.