| Tanasak Srisai | |
| Fullname: | Tanasak Srisai |
| Birth Date: | 1989 9, df=yes |
| Birth Place: | Prachinburi, Thailand |
| Currentclub: | Chiangrai United |
| Clubnumber: | 3 |
| Position: | Centre-back |
| Youthyears1: | 2006 |
| Youthclubs1: | Patumkongka School |
| Years1: | 2007–2010 |
| Clubs1: | Pluakdaeng Rayong United |
| Caps1: | 28 |
| Goals1: | 4 |
| Years2: | 2011–2012 |
| Clubs2: | TOT |
| Caps2: | 46 |
| Goals2: | 2 |
| Years3: | 2013–2014 |
| Clubs3: | Buriram United |
| Caps3: | 48 |
| Goals3: | 2 |
| Years4: | 2015 |
| Clubs4: | Police Tero |
| Caps4: | 7 |
| Goals4: | 0 |
| Years5: | 2015 |
| Clubs5: | Ubon UMT United |
| Caps5: | 12 |
| Goals5: | 2 |
| Years6: | 2016 |
| Clubs6: | Pattaya United |
| Caps6: | 28 |
| Goals6: | 1 |
| Years7: | 2017 |
| Clubs7: | Police Tero |
| Caps7: | 24 |
| Goals7: | 2 |
| Years8: | 2018– |
| Clubs8: | Chiangrai United |
| Caps8: | 104 |
| Goals8: | 1 |
| Nationalyears1: | 2008–2009 |
| Nationalteam1: | Thailand U19 |
| Nationalyears2: | 2012–2013 |
| Nationalteam2: | Thailand |
| Nationalcaps2: | 1 |
| Nationalgoals2: | 0 |
| Club-Update: | 3 April 2023 |
Tanasak Srisai (th|ธนะศักดิ์ ศรีใส, born September 25, 1989), simply known as Bee (th|บี), is a Thai professional footballer who plays as a centre-back for Thai League 1 club Chiangrai United.
Tanasak's form with TOT S.C. is impressive and is one of the main players on the team, therefore Buriram United bought him in 2013. At the start of the 2013 season he played well and became the starter of the team for a couple times. He scored his first Buriram goal against Chonburi FC in 2013.
He was called up by Winfried Schäfer to the 2012 King's Cup. On March 6, 2014, he debuted for Thailand against Lebanon in the 2015 AFC Asian Cup qualification.
| National team | Year | Apps | Goals |
|---|---|---|---|
| Thailand | 2014 | 1 | 0 |
| Total | 1 | 0 |
Buriram United
Ubon UMT United
Chiangrai United