Timi Tapio Lahti (born 28 June 1990) is a Finnish former professional footballer who played as a centre back.

Since 2015, Lahti has worked for Jalkapallon Pelaajayhdistys [fi] (JPY), "Finnish Football Players Union".

[1] A product of his local club JJK, Lahti finished his grooming at FC Haka.

He made his debut for HJK on 18 August 2011 playing as a starter against Schalke 04 in the Europa League playoff round as the Finns won by 2–0.

[4] During his time with the Helsinki side Lahti won three consecutive Finnish league championships from 2011 to 2013.