Which group of islands were affected by Tsunami in 2004? Share with your friends Share 5 Reecha Upadhyaya answered this Andaman Nicobar islands alongwith the Indonesian islands in South East Asia. 11 View Full Answer Pulkit_Bansal answered this Nicobar islands were affected by tsunami in 2004. 0 Saloni Kenguva answered this andaman and nicobar islands 1