| Club: | Leinster Rugby |
| Season: | 2006–07 |
| Manager: |  Michael Cheika |
| Captain: | Brian O'Driscoll |
| League: | Celtic League |
| League Result: | 3rd |
| Cup1: | Heineken Cup |
| Cup1 Result: | Quarter-finalist |
| Try Scorer: | Shane Horgan (9) |
| Points Scorer: | Felipe Contepomi (258) |
| Highest Attendance: | 48,000 vs Ulster 31 December 2006 |
| Lowest Attendance: | 3,750 vs Glasgow Warriors 10 November 2006 |
| Average Attendance: | 12,808 |
| Pattern B1: | _collarwhite |
| Leftarm1: | 000040 |
| Body1: | 000040 |
| Rightarm1: | 000040 |
| Shorts1: | 000040 |
| Socks1: | 000040 |
| Pattern B2: | _collarwhite |
| Leftarm2: | 00CCFF |
| Body2: | 00CCFF |
| Rightarm2: | 00CCFF |
| Shorts2: | FFFFFF |
| Socks2: | 00CCFF |
| Pattern B3: | _collarwhite |
| Leftarm3: | FFFFFF |
| Body3: | FFFFFF |
| Rightarm3: | FFFFFF |
| Shorts3: | 000040 |
| Socks3: | 000040 |
| Prevseason: | 2005–06 |
| Nextseason: | 2007–08 |
The 2006–07 Leinster Rugby season was Leinster's sixth competing in the Celtic League alongside which they competed in the 2006–07 Heineken Cup. The season ended without silverware as the team finished third in the Celtic League[1] and were eliminated at the quarter-final stage of the Heineken Cup. The 2006–07 season was the last in which home Celtic League games were played in Donnybrook (future ties have been played at the larger RDS Arena).[2]
Leinster average Celtic League attendance was 12,796[3] (boosted heavily by two games held at Lansdowne Road).
Leinster's tie against Ulster Rugby set a Celtic League record with a sell out attendance of 48,000 at the last ever game at Lansdowne Road.[4]
| Round | Date | Home team | Score | Away team | Score | Venue | Match Report | |
|---|---|---|---|---|---|---|---|---|
| Round 1 | 21 October 2006 | Leinster | 37 | Gloucester | 20 | Lansdowne Road, Dublin | [5] | |
| Round 2 | 29 October 2006 | Edinburgh | 25 | Leinster | 24 | Murrayfield, Edinburgh | http://www.ercrugby.com/eng/12_5666.php | |
| Round 3 | 9 December 2006 | Leinster | 26 | Agen | 10 | Lansdowne Road, Dublin | http://www.ercrugby.com/eng/12_5687.php | |
| Round 4 | 16 December 2006 | Agen | 13 | Leinster | 25 | Stade Armandie, Agen | http://www.ercrugby.com/eng/12_5721.php | |
| Round 5 | 13 January 2007 | Leinster | 39 | Edinburgh | 10 | Donnybrook, Dublin | http://www.ercrugby.com/eng/12_5743.php | |
| Round 6 | 19 January 2007 | Gloucester | 19 | Leinster | 13 | Kingsholm, Gloucester | http://www.ercrugby.com/eng/12_5772.php | |
| Quarter-final | 31 March 2007 | London Wasps | 35 | Leinster | 13 | Adams Park, High Wycombe | http://www.ercrugby.com/eng/12_6392.php |