William Nicholaus Lyimo (maarufu kwa jina la kisanii Bill Nass ; amezaliwa 11 Aprili 1993) ni rapa wa Kitanzania. MTV Base ilimtaja kati ya "Wasanii 50 walio tazamwa Kwa Mwaka 2017". Miezi kadhaa baada ya kutolewa kwa wimbo wake wa kwanza "Raha", Bill Nass aliteuliwa kuwania Tuzo za Muziki za Kilimanjaro Tanzania (KTMA) za mwaka 2015 kama "Msanii Mpya Bora". Who Is Bill Nass; A Rapper From Tanzania (en-gb). THE NEW AFRICAN LEGACY. Iliwekwa mnamo 2021-06-20. MTV Base releases list of artists to watch in 2017 (en). Music In Africa (2017-02-14). Iliwekwa mnamo 2021-06-20. Bill Nass (en). Music In Africa (2017-09-19). Iliwekwa mnamo 2021-06-20. mtv news | top african acts to lookout for in 2017 | MTV Africa. web.archive.org (2017-11-15). Iliwekwa mnamo 2021-06-20. djmwanga (2014-12-21). New AUDIO | Bill Nas Ft Nazizi - Raha | Download (en-US). DJ Mwanga. Iliwekwa mnamo 2021-06-20. Majina ya wateule wa KTMA 2015 yatangazwa (en-US). Bongo5.com (2015-04-29). Iliwekwa mnamo 2021-06-20.