ICOCA is advertised on posters at stations operated by the Keihanshin, Okayama and Hiroshima branches as well as on the monitors installed in the cars of JR West Commuter Train Series 321, which are operated on the JR Takarazuka Line, Kyoto Line and Kobe Line in the Keihanshin area.
ICOCAの広告は、京阪神・岡山・広島支社の駅のポスターおよび京阪神のJR宝塚・京都・神戸線で運行されているJR西日本321系電車の車内モニターで放映されている。