Ulimi lwesiTumbuka wulimi lwesiBantu olukhulunywa esifundeni esiseNyakatho neMalawi futhi nasesifundeni iLundazi eZambia . Kuyaziwa nangokuthi Chitumbuka noma Citumbuka - isiqalo se- chi- phambi kweTumbuka sisho "ulimi lwama-", futhi kulokhu kuyaqondakala ukuthi kusho ukuthi "ulimi ( lwabantu baseTumbuka )".Isi-Tumbuka kungokwalabo iqembu elifanayo ulimi ( Guthrie Zone N ) njengoba Chewa futhi Sena . I-World Almanac (1998) ilinganisela ukuthi kunezikhulumi zesiTumbuka ezibalelwa ku-2 000 000,yize eminye imithombo ilinganisela inani elincane kakhulu. Iningi lezikhulumi zesiTumbuka kuthiwa zihlala eMalawi.IsiTumbuka sikhulunywa kakhulu ezilimini zaseNyakatho Malawi, ikakhulukazi ezifundeni zaseRumphi, eMzuzu, naseMzimba . Kukhona umehluko omkhulu phakathi kohlobo lwesiTumbuka olukhulunywa ezindaweni ezisemadolobheni eMalawi (okuboleka amanye amagama avela esiSwahili naseChewa ) kanye "nomzana" noma "isijulile" isiTumbuka esikhulunywa ezigodini.Ukuhluka kweRumphi kuvame ukubhekwa njenge "msulwa ngokwamalimi", futhi kwesinye isikhathi kubizwa nge- "Tumbuka yangempela". I Mzimba lwesigodi iye kakhulu ukuthonywa Zulu (chiNgoni), ngisho kude ukuze abe ukuchofoza ngamagama afana chitha[ʇʰitʰa] "chama",okungekho kwezinye izilimi.