Tinu became the first cricketer from the state of Kerala to play for India at the international level; Tinu Yohannan represented India in 3 Tests and 3 ODIs. In 2000, Yohannan was picked to sharpen his prowess at the NCA (National Cricket Academy) in Bangalore. Though, he made his Ranji debut in 1999/2000, he was picked to play for the national team just on the experience of one first class season. He made his Test debut against the touring England in Mohali in December 2001.
His test and ODI career started well but was not enough to impress the selectors and once dropped; he was unable to make it to the national side again. The last time he played for India was against New Zealand in 2002. He played 59 first-class games in his career and picked up 145 wickets and in his 45 match List A career, he took 63 wickets.
He represented Kerala at the domestic level, on and off till 2010 season and then shifted to Chennai to play first-division cricket. He was roped in by IPL franchise Royal Challengers Bangalore in 2009.
Post retirement from all formats of the game, he took up the bowling coach job for Kerala in 2014.