1st Yanaul (; , 1-se Yañawñl) is a rural locality (a village) in Kudashevsky Selsoviet of Tatyshlinsky District, Russia. The population was 98 as of 2010.
1st Yanaul is located 18 km west of Verkhniye Tatyshly (the district's administrative centre) by road. Kardagushevo is the nearest rural locality.