Petri Tiainen

{{short description|Finnish footballer (born 1966)}}

{{Use dmy dates|date=April 2019}}

{{Infobox football biography

| name = Petri Tiainen

| fullname = Petri Tiainen

| image =

| birth_date = {{birth date and age|df=yes|1966|9|26}}

| birth_place = Lahti, Finland

| height = 1.74 m

| currentclub =

| clubnumber =

| position = Midfielder

| years1 = 1984–1986 | clubs1 = Kuusysi | caps1 = 38 | goals1 = 5

| years2 = 1986–1989 | clubs2 = Ajax | caps2 = 8 | goals2 = 0

| years3 = 1989–1992 | clubs3 = HJK Helsinki | caps3 = 66 | goals3 = 4

| years4 = 1994–1997 | clubs4 = MYPA | caps4 = 70 | goals4 = 13

| years5 = 1998 | clubs5 = FC Lahti | caps5 = 17 | goals5 = 0

| nationalyears1 = 1986–1995 | nationalteam1 = Finland | nationalcaps1 = 15 | nationalgoals1 = 2

}}

Petri Tiainen (born 26 September 1966) is a retired Finnish former football attacking midfielder.

He played for Kuusysi Lahti from 1984 to 1986, AFC Ajax from 1986 to 1989, HJK Helsinki from 1989 to 1992, MyPa from 1994 to 1997 and FC Lahti in 1998. He was capped 13 times for Finland, scoring 2 goals.{{NFT player|pid=34947}} He won the Finnish Footballer of the Year award in 1986.