The detailed information of each issue is edited according to the publicity
of the Japan Post
| 11 January | World Conference on Disaster Reduction C1965 | 80 yen |
| 1 February | The Opening of the Chubu International Airport C1966 | 80 yen |
| 23 March | Science and Technology and Animation Series VII C1921a-e, 1922a-g | (80 yen x 10) x 2 |
| 25 March | EXPO 2005 AICHI JAPAN C1967-1968 | 80 yen x 2 |
| 20 April | Philatelic Week 2005 C1969 | 80 yen |
| 28 April | The Centenary of Rotary International (PolioPlus Program) C1970 | 80 yen |
| 2 May | Mountain Climbing & Mountains C1971 | 50 yen x 4 |
| 23 June | Animation Hero and Heroine Series I C1972a-e | 80 yen x 3, 50 yen x 2 |
| 22 July | Letter-Writing Day 2005 C1992a-d, 1993a-j, 1994, CB30 | 50 yen x 4, 80 yen x 10, 50 + 80 yen, 680 yen |
| 1 August | Animation Hero and Heroine Series II C1973a-e | 80 yen x 3, 50 yen x 2 |
| 1 September | Kokinshu and Shin-Kokinshu Anniversaries C1995a-b | 80 yen x 2 |
| 3 October | International Astronautical Congress 2005 Fukuoka C1996a-b | 80 yen x 2 |
| 7 October | International Letter-Writing Week 2005 C1997-1999 | 90 yen, 110 yen, 130 yen |
| 15 November | New Year's Stamps for 2006 N107-108 | 50 yen, 80 yen |
| 15 November | New Year's Stamps with Lottery for 2006 N109-110 | 53 yen, 83 yen |
| 1 December | 2005/2006 Deutschland in Japan C2000 | 80 yen x10 |
Date of issue and other details are subject to change
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