Ağaybaş (Derzhavin, Tatar: Агайбаш, romanized: Ağaybaş) is a rural locality (a selo) in Layış District, Tatarstan. The population was 453 as of 2010. Ağaybaş is located 19 km from Layış, district's administrative centre, and 43 km from Qazan, republic's capital, by road. The earliest known record of the settlement dates from 16th century. There are 12 streets in the village.