| 1 Jan, 2023 (Sun) | New Year's Day | National holiday |
| 19 Mar, 2023 (Sun) | Saint Joseph's Day | Observance |
| 20 Mar, 2023 (Mon) | March Equinox | Season |
| 6 Apr, 2023 (Thu) | Maundy Thursday | National holiday, Christian |
| 7 Apr, 2023 (Fri) | Good Friday | National holiday, Christian |
| 10 Apr, 2023 (Mon) | Battle of Rivas | National holiday |
| 11 Apr, 2023 (Tue) | Battle of Rivas | Observance |
| 1 May, 2023 (Mon) | Labor Day / May Day | National holiday |
| 18 Jun, 2023 (Sun) | Father's Day | Observance |
| 21 Jun, 2023 (Wed) | June Solstice | Season |
| 24 Jul, 2023 (Mon) | Annexation of Guanacaste | National holiday |
| 25 Jul, 2023 (Tue) | Annexation of Guanacaste | Observance |
| 2 Aug, 2023 (Wed) | Our Lady of Los Ángeles | Non Compulsory Payment Holiday |
| 14 Aug, 2023 (Mon) | Mother's Day | National holiday |
| 15 Aug, 2023 (Tue) | Mother's Day | Observance |
| 24 Aug, 2023 (Thu) | National Parks Day | Observance |
| 3 Sep, 2023 (Sun) | Day of the Black Person and Afro-Costa Rican Culture | Non Compulsory Payment Holiday |
| 9 Sep, 2023 (Sat) | Children's Day | Observance |
| 15 Sep, 2023 (Fri) | Independence Day | National holiday |
| 23 Sep, 2023 (Sat) | September Equinox | Season |
| 2 Nov, 2023 (Thu) | All Souls' Day | Observance |
| 22 Nov, 2023 (Wed) | Teacher's Day | Observance |
| 1 Dec, 2023 (Fri) | Day of Abolition of the Army | Non Compulsory Payment Holiday |
| 8 Dec, 2023 (Fri) | Feast of the Immaculate Conception | Observance |
| 22 Dec, 2023 (Fri) | December Solstice | Season |
| 25 Dec, 2023 (Mon) | Christmas Day | National holiday, Christian |
| 31 Dec, 2023 (Sun) | New Year's Eve | Observance |
