Hans Mulder played for Delhi Dynamos in the previous two editions of the Indian Super League.
Chennaiyin FC confirmed the news on twitter. The tweet read:
The Dutch midfielder started his career at the Spanish club Real Zaragoza's and then joined Netherlands outfit RKC Waalwijk. He went on to play for RKC Waalwijk's senior side in both the first and second tier of Holland.
Mulder has played 28 matches in Indian Super League for Delhi Dynamos, scoring three goals. He is ranked in the top five of most games in ISL history.
Chennaiyin manager Marco Materazzi spoke on signing the Dutch. He said: "Mulder had two very consistent seasons in the ISL. We were keen to add his quality and experience in our midfield this year. So we are very happy to have signed him and believe in him to have another strong campaign."
Mulder to gave his reaction. He said: "I enjoyed my two years in India while playing for Delhi. When Marco Materazzi showed interest in me, I instantly made up my mind of joining Chennaiyin. I am looking forward to playing for such a consistent team and hope to win my first ISL title with them."