Donald Stephen Pietromonaco (September 15, 1935 – April 18, 1997) was an award-winning radio personality and voice actor, known to millions of radio listeners as "Johnny Rabbitt" on KXOK-AM 630 in St. Louis, Missouri, from 1963 to 1969. Every evening at 7pm, a predominantly teenage radio audience would tune into 630 on the AM dial to hear the Johnny Rabbitt Show, which co-starred Bruno J. Grunion, a mythical teenage ne'er-do-well voiced by Pietromonaco (unbeknownst to the listening audience).