Antti Juhana Kuosmanen (born 1950, in Juva) is a Finnish diplomat. He headed the Finnish Embassy in Singapore for six months in 2015. In 2013–2015 he was Finland's Senior Official for ASEM (Asia-Europe Meeting). In 2009–2013 he was Finland's Permanent Representative to the OECD and UNESCO. Until then he was Finland's Ambassador to the People's Republic of China and Mongolia (2005–2009). Kuosmanen is married to Satu Kuosmanen and has two adult daughters. He is retired from active service since 1 March 2018.