R series Adventure R series – paramotors for gliders BL R-series engine – gasoline car engines Dennis R series – coach chassis Ford R series – busses International Harvester R series – trucks Mack R series – heavy-duty trucks R series – Renard number series in mathematics Samsung Galaxy R series – Android smartphones Scania R series – trucks Sony Ericsson R series, a series of cell phones See also Q series (disambiguation) S series (disambiguation)