I Know Him So Well by Elaine Paige and Barbara Dickson first appeared on the Israeli foreign-music chart on 10 Feb 1985, entering at #30. It peaked at #23 on 17 Feb 1985. In total it spent 3 weeks on the chart, last charting on 24 Feb 1985.
| Wk | Date | Pos |
|---|---|---|
| 1 | 10 Feb 1985 | 30 |
| 2 | 17 Feb 1985 | 23 |
| 3 | 24 Feb 1985 | 28 |