Have You Never Been Mellow by Olivia Newton-John first appeared on the Israeli foreign-music chart on 2 Mar 1975, entering at #22. It peaked at #1 on 6 Apr 1975, holding the top spot for 1 week. In total it spent 10 weeks on the chart, last charting on 4 May 1975.
| Wk | Date | Pos |
|---|---|---|
| 1 | 2 Mar 1975 | 22 |
| 2 | 9 Mar 1975 | 12 |
| 3 | 16 Mar 1975 | 10 |
| 4 | 23 Mar 1975 | 5 |
| 5 | 30 Mar 1975 | 2 |
| 6 | 6 Apr 1975 | 1 |
| 7 | 13 Apr 1975 | 2 |
| 8 | 20 Apr 1975 | 6 |
| 9 | 27 Apr 1975 | 13 |
| 10 | 4 May 1975 | 20 |