Tolgahan Çoğulu (born 1978, in Ankara, Turkey) is a Turkish classical guitarist, arranger and designer of the . He built a unique repertoire of works for microtonal guitar by arranging Anatolian folk music and Ottoman maqam music and by commissioning the leading and emerging composers. In 2014, he won the 1st prize at the prestigious Margaret Guthman Musical Instrument Competition at Georgia Tech. He also won the jury award at Donizetti Classical Music Awards in 2014.