Festivals form an essential aspect of Socio-Cultural life of the people of Arunachal Pradesh.  As a matter of fact festivals are the mirrors of the people's culture. Every society of the people of Arunachal Prdesh celebrate number of festivals-agricutural, religious and socio-cultural, which give them ample opportunity to enjoy freely.  These are the occasions for people to relax, to enjoy, to dance and eat and drink.  Agriculture being the basic means of livelihood the festivals having connection with agriculture are celebrated in bigger scale either to thank the God for the providence or pray for bumper harvest.  While the ritual part of each festival is performed by the priest other arrangements of the festivals are done by the people in a community basis.   Throughout the twelve months of the year festivals are celebrated by one or the other tribes.  Not a single month passed off wothout a festival. From this point of view Arunachal may also be called the land of festivals.

                     Some of the important festivals are  shown in the table below.

                       Animal sacrifice is a common ritual in most of the festivals.

2.

11 February          Feb/March

3.

i)Nyokum( Nishings)
ii)Gomkum gompa (Sulungs)

26 February
15 April

4.

Lower Subansiri

i) Boori Boot (Hill Miris)
ii)Nyokum (Nishings)
iii)Dree ( Apatanis)

6 February
26 February
5 July

5.

Upper Subansiri

i) Si-Donyi (Togins)     
ii) Boori Boot(Hill Miris)
iii) Mopin (Adis)

6.

7.

7 March
5 April
1 September

8.

i) Tamladu (Taroon & Kamman Mishmis)
ii) Sangken (khampti)
iii) Shapawng Yawng Manau Poi (Singpho)

15 April
14 February

9.

Lower Dibang Valley

i)Reh (Idu Mishmis)
ii) Solung (Adis)

1 February
1 September

10.

i)Reh (Idu Mishmis)
ii) Solung (Adis)

1 February
1 September

12.

i)Oriah (Wanchos)
ii) Chalo-Loku (Noctes)

16 February
25 November

13.

14.

i) Nyokum (Nishing)

26 February

15.

i) Mopin
ii) Solung

5 April
1 September