Cal. Bus. & Prof. Code § 5058

No person or partnership shall assume or use the title or designation “chartered accountant,” “certified accountant,” “enrolled accountant,” “registered accountant” or “licensed accountant,” or any other title or designation likely to be confused with “certified public accountant” or “public accountant,” or any of the abbreviations “C.A.,” “E.A.,” “R.A.,” or “L.A.,” or similar abbreviations likely to be confused with “C.P.A.” or “P.A.”; provided, that any person qualified as a certified public accountant under this chapter who also holds a comparable title granted under the laws of another country may use such title in conjunction with the title of “certified public accountant” or “C.P.A.” and provided, that any person enrolled to practice before the Internal Revenue Service and recognized as an enrolled agent may use the abbreviation “E.A.”