Harshen Yasa

Iyasa (Yasa, Yassa) yaren Bantu ne da ake magana da shi a cikin Kamaru da Equatorial Guinea ta mutanen Iyasa da Ndowe masu kamun kifi na bakin teku. Ana kuma amfani da shi ta hanyar Pygmies, watakila Babongo, a Gabon . Kimanin mutane 3,000 suna magana da Iyasa,  ko da yake wasu sun lura cewa wannan adadin na iya zama ƙima. 

Iyasa kuma yana da sunayen Bongwe, Lyaasa, da Maasa. Yaruka sune Bweko, Vendo, Bodele, Aure, Daya, Asonga, Bomui, Mogana, Mooma, Mapanga . Yana iya kuma ya zama yaren Kombe . Masu iya magana sun ba da rahoton cewa Kombe da Iyasa sun kusan fahimtar juna. 

 Rabewa 
Dieu da Renaud (1993) sun rarraba Iyasa a matsayin harshen Sawabantu (A.30 a cikin rarrabuwar Guthrie). 

 Rarraba Geographic 
Ana magana da Iyasa a gabar tekun Kamaru kudu da Kribi, ciki har da birnin Campo . Ana kuma magana a fadin kogin Ntem a Equatorial Guinea.  Ƙauyen Iyasa na arewa shine Lolabe, 31 km kudu da Kribi. 

 Ilimin sauti 
Iyasa yana da tsarin wasali bakwai: 
+Wayoyin monophthong Gaba Tsakiya Baya Kusa i u Kusa-tsakiyar e o Bude-tsakiyar ɛ ɔ Bude a
Hakanan yana da baƙaƙen sauti guda 22: 
Labial Alveolar Bayan-<br id="mwgg"><br><br><br> alveolar Palatal Velar Glottal Nasal m n ɲ ŋ M / Haɗin kai  p t tʃ k  d dʒ ɟ ɡ  ɓ ɗ Mai sassautawa v s h Semi wasali w j Na gefe l 

 Nahawu 

 Darasi na suna 
Iyasa yana da azuzuwan suna 12, kamar yadda aka zayyana a cikin jadawalin da ke ƙasa (wanda aka daidaita daga Bôt 2011 da Bouh Ma Sitna 2004):  

 Manazarta 

Rukuni:Shafuka masu fassarorin da ba'a duba ba