Masarautar Biu masarautar gargajiya ce da ke a Biu a cikin jihar Borno, Najeriya . Kafin 1920 ana kiran ta da Masarautar Biu. Mai mulkin yanzu, wanda yake a ranar 14 ga watan Satumbar 2020 ya ayyana shi,shi ne Maidalla Mustafa dan Aliyu (b. 1915) wanda ya zama Mai Biu, shi ma ya yi wa Kuthli, a cikin 1959. Sarakunan Biu an kirga su ne daga Abdullahi, wanda daga baya ake kira Yamta-ra-Wala ko Yamta Babban, wanda ya kafa mulkinsa a kusan 1535.Wajen 1670, a cikin mulkin Mari Watila Tampta, ya zama sananne da masarauta.Babban ƙabilun shine mutanen Babur / Bura, masu alaƙa da mutanen Kanuri . An ce wanda ya kirkiro ya taho daga wani wuri, ya kame babban garin da ke yankin, sannan ya kafa sabon babban birni a Dlimbur, wanda yanzu ya zama wurin tarihi. Zuriyarsa sun kafa dauloli guda biyu masu adawa da juna, ɗaya a Kogu ɗayan kuma a kusa da Mandaragirau . Sarki Mari Watirwa (r. 1793-1838) na Kogu ya fatattaki Fulani maharan daga Masarautar Gombe zuwa yamma.