Kouassi Yao Hermann (born 26 January 1990), known as Yao Hermann Kouassi and Hermann Yao Kouassi, is an Ivorian footballer who plays for Angthong in the Thai League 3 as a forward.
Hermann scored 16 goals for Air Force Central in 2013 as the club were promoted back to the Thai Premier League. On 9 March 2014, he made his debut in the Premier League and scored a consolation goal as Air Force were defeated 5âÂÂ1 by Police United.
Yao Kouassi scored the game-winning goal for Air Force Central on 17 May 2014, as the club came from 0âÂÂ1 down to win 2âÂÂ1. On 31 May, he scored Air Force's second goal in their 2âÂÂ0 win over Sisaket F.C. On 21 June, he brought his team back from a goal down, scoring a hat-trick to defeat Chainat Hornbill 3âÂÂ1 in the 19th round of the Thai Premier League. On 23 July, Yao Kouassi scored Air Force's equalizer against Bangkok Glass but a late Suppasek Kaikaew strike won it 3âÂÂ1 for the Pathum Thani club.