The Malawian National Teams come from the African country of Malawi.
Malawi won the 1998 Quidditch World Cup against the Senegal National Team by 260 points to Senegal’s 180 points. It was only the second all-Africa final in Quidditch World Cup history (Pm).
Malawi is located in Southeastern Africa. Although they played in a Quidditch World Cup final, there is no mention of Quidditch in their Wikipedia entry (Wikipedia).
Lexicon list of World Quidditch Teams
From the Web
Writing by J.K. Rowling on Pottermore:
Pottermore enhanced reading experience: Quidditch World Cup
Screenshots of the original Daily Prophet coverage of the 2014 Quidditch World Cup on Pottermore: Imgur web archive
Harry Potter Wiki: Malawian National Quidditch Team
Tags: competitions/competitors international Quidditch history sports teams victories