Showaddywaddy appears 11 times in the Israeli foreign-music chart archive (1974–1979). One single reached #1. Best performer: Hey Rock and Roll (peak #1, 12 weeks on chart). 2 of their songs also placed on a year-end chart.
| Peak | Song | Entered | Wks | Annual |
|---|---|---|---|---|
| 1 | Hey Rock and Roll | 11 Aug 1974 | 12 | 1974 #18 |
| 3 | Under the Moon of Love | 28 Nov 1976 | 10 | 1977 #40 |
| 3 | When | 10 Apr 1977 | 9 | – |
| 6 | You Got What It Takes | 21 Aug 1977 | 7 | – |
| 11 | Dancin' Party | 4 Dec 1977 | 7 | – |
| 11 | Pretty Little Angel Eyes | 3 Dec 1978 | 7 | – |
| 17 | I Wonder Why | 23 Apr 1978 | 5 | – |
| 22 | A Little Bit of Soap | 30 Jul 1978 | 4 | – |
| 27 | Remember Then | 21 May 1979 | 3 | – |
| 30 | Heartbeat | 28 Sep 1975 | 1 | – |
| 36 | Sweet Little Rock 'n' Roller | 15 Oct 1979 | 1 | – |