| 1/1/1963, Tue | International New Year Day |
- Note
- A paid public holiday.
|
| 1/7/1963, Mon | Victory over Genocide Day |
- Note
- A paid public holiday. Commemorates the 7 January 1979 fall of Democratic Kampuchea (Khmer Rouge) with Vietnamese assistance.
|
| 3/8/1963, Fri | International Women's Day |
- Note
- A paid public holiday.
|
| 4/13/1963, Sat | Khmer New Year Day 1 |
- Note
- A paid public holiday (Chaul Chnam Thmey / Maha Sangkranta).
|
| 4/14/1963, Sun | Khmer New Year Day 2 |
- Note
- A paid public holiday (Vireak Vanabat).
|
| 4/15/1963, Mon | Khmer New Year Day 3 |
- Note
- A paid public holiday (Vireak Loeng Sak).
|
| 5/1/1963, Wed | International Labor Day |
- Note
- A paid public holiday.
|
| 5/8/1963, Wed | Visak Bochea |
- Note
- A paid public holiday. Celebrates the birth, enlightenment, and passing into Nirvana (death) of Gautama Buddha.
|
| 5/12/1963, Sun | Royal Ploughing Ceremony |
- Note
- A paid public holiday (Preah Reach Pithi Chrat Preah Neangkol).
|
| 5/14/1963, Tue | King Norodom Sihamoni's Birthday |
- Note
- A paid public holiday (King Norodom Sihamoni's Birthday, b. 14 May 1953).
|
| 6/18/1963, Tue | Queen Mother Norodom Monineath Sihanouk's Birthday |
- Note
- A paid public holiday (Queen Mother Norodom Monineath Sihanouk's Birthday, b. 18 June 1936).
|
| 9/24/1963, Tue | Constitutional Day |
- Note
- A paid public holiday. Commemorates the promulgation of the 1993 Cambodian Constitution on 24 September.
|
| 10/21/1963, Mon | Commemoration of the Late King Father Norodom Sihanouk |
- Note
- A paid public holiday. Commemorates the death of the Late King Father Norodom Sihanouk on 15 October 2012.
|
| 10/29/1963, Tue | Coronation Day of King Norodom Sihamoni |
- Note
- A paid public holiday. Commemorates the coronation of King Norodom Sihamoni on 29 October 2004.
|
| 10/30/1963, Wed | Pchum Ben Day 1 |
- Note
- A paid public holiday. Ancestor Veneration Festival for departed relatives.
|
| 10/31/1963, Thu | Pchum Ben Day 2 (Ben Thom) |
- Note
- A paid public holiday (Ben Thom / the "great Ben").
|
| 11/1/1963, Fri | Pchum Ben Day 3 |
- Note
- A paid public holiday (Pchum Ben Day 3).
|
| 11/9/1963, Sat | National Independence Day |
- Note
- A paid public holiday. Commemorates Cambodia's independence from France on 9 November 1953.
|
| 11/30/1963, Sat | Water Festival Day 1 |
- Note
- A paid public holiday (Bon Om Touk).
|
| 12/1/1963, Sun | Water Festival Day 2 |
- Note
- A paid public holiday (Bon Om Touk).
|
| 12/1/1963, Sun | Water Festival Day 3 |
- Note
- A paid public holiday (Bon Om Touk).
|
| 12/29/1963, Sun | Peace Day in Cambodia |
- Note
- A paid public holiday.
|