Satyanweshi (Bengali: সত্যান্বেষী) also spelled Satyanveshi, (Lit: The Truth Seeker) is a detective story written by Sharadindu Bandyopadhyay featuring the Bengali detective Byomkesh Bakshi and his friend, assistant, and narrator Ajit Bandyopadhyay. It is the first Byomkesh adventure written by Sharadindu Bandyopadhyay.