Kottathur is a settlement in Ayroor village situated on the eastern part of Ayroor Village of Pathanamthitta district in Kerala state, India. The Pamba River flows by the southern side of the settlement, providing fertile soil. The settlement is in the parliamentary constituency of Pathanamthitta; the representative is Mr.Anto Antony.The Pamba river and the surrounding hills and valleys make Kottathur one of the most picturesque places in Ayrioor.