We have prepared a list of Sikkim holidays 2021. The list includes all regional, public, and bank holidays in Sikkim in 2021. You can refer to the Sikkim Holiday List 2021 and plan your leaves accordingly.
| Date | Day | Holiday |
| Jan 1 | Friday | New Year's Day |
| Jan 4 | Monday | Barahimizong |
| Jan 14 | Thursday | Maghe Sankranti |
| Jan 26 | Tuesday | Republic Day |
| Feb 12 | Friday | Sonam Lochhar, Losar |
| Feb 27 | Saturday | Bhumchu |
| Mar 29 | Monday | Holi |
| Apr 2 | Friday | Good Friday |
| Apr 14 | Wednesday | Dr. B.R Ambedkar Jayanti |
| Apr 21 | Wednesday | Ramnawami (Chaite Dasan) |
| May 14 | Friday | Id-Ul-Fitr |
| May 16 | Sunday | State Day |
| May 26 | Wednesday | Saga Dawa, Shyadar Pidar |
| Jul 13 | Tuesday | Bhanu Jayanti |
| Jul 14 | Wednesday | Drukpa Tshe-zi |
| Jul 19 | Monday | Guru Rimpoche's Thungkar Tshechu |
| Aug 8 | Sunday | Tendong Lho Rum Faat |
| Aug 15 | Sunday | Independence Day |
| Aug 22 | Sunday | Pang-Lhabsol |
| Aug 30 | Monday | Janmasthami |
| Sep 9 | Thursday | Teej (Haritalika) |
| Sep 20 | Monday | Indrajatra |
| Oct 2 | Saturday | Gandhi Jayanti |
| Oct 5 | Tuesday | Birthday Of Late Nar Bahadur Bhandari, Former Chief Minister Of Sikkim |
| Oct 13 | Wednesday | Durga Puja (Dasain) |
| Oct 14 | Thursday | Durga Puja (Dasain) |
| Oct 15 | Friday | Durga Puja (Dasain) |
| Oct 16 | Saturday | Durga Puja (Dasain) |
| Oct 17 | Sunday | Durga Puja (Dasain) |
| Oct 27 | Wednesday | Lhabab Duechen |
| Nov 4 | Thursday | Laxmi Puja (Deepawali) |
| Nov 5 | Friday | Laxmi Puja (Deepawali) |
| Nov 6 | Saturday | Laxmi Puja (Deepawali) |
| Dec 19 | Sunday | Phugal Parim, Teyongsi Sirijunga Sawan Tongnam |
| Dec 24 | Friday | Sakewa, Barahimizong |
| Dec 25 | Saturday | Christmas |
| Dec 30 | Thursday | Tamu Lochar |