#2PM Songs Written and/or Composed by 2PM Members Themselves — A Lengthy Thread.
Note: This thread mostly comprises of songs from the 2PM Korean Albums only because if I included their entire Japanese and members' solo discography too this thread would never end
Give It To Me

Songwriter: Junho @dlwnsghek
Album: Hands Up (2011)

"Give It To Me" is one of the first songs written by a 2PM member to be included in an album and has been a fan favourite since
HOT

Songwriter: Jun. K @Jun2daKAY (Junsu at the time)
Album: Hands Up (2011)

"HOT" was written by Jun. K as a solo performance song in a 2009 fanmeeting and was subsequently included in their second album
GO CRAZY!

Songwriter & Composer: Jun. K @Jun2daKAY
Album: GO CRAZY! (2014)

"GO CRAZY!" is the FIRST TITLE TRACK to be written and composed by a 2PM member. Jun. K said he was so happy his song became the title track he called his mom while crying
Promise (I'll be)

Songwriter & Composer: Taecyeon @taeccool
Album: Gentlemen's Game (2016)

"Promise (I'll be)" is the FIRST TITLE TRACK written and composed by Taecyeon and it is featured in their last album before the group went on military hiatus
My House

Songwriter & Composer: Jun. K @Jun2daKAY
Album: No. 5 (2015)

"My House" is another title track written and composed by Jun. K for their fifth album. The song got a resurgence in popularity when a fancam of Junho went viral among K-netz
#JUN_K wrote the most number of songs in JYPE after J.Y. Park himself
Game Over

Songwriter & Composer: Jun. K @Jun2daKAY
Album: Grown (2013)
At Times/Suddenly (문득)

Songwriter & Composer: Jun. K @Jun2daKAY
Album: Grown (2013)
True Swag (Jun. K Solo)

Songwriter & Composer: Jun. K @Jun2daKAY
Album: Grown Grand Edition (2013)
Goodbye Trip

Songwriter & Composer: Jun. K @Jun2daKAY
Album: GO CRAZY! (2014)
Superman (Jun. K & Wooyoung Duet)

Songwriters: Jun. K @Jun2daKAY, Wooyoung @0430yes
Album: GO CRAZY! Grand Edition (2014)
Not The Only One (너만의 남자)

Songwriter & Composer: Jun. K @Jun2daKAY
Album: No. 5 (2015)

Jun. K said that he wrote this song to warn Hottests about bad men and went on to have one of the sexiest stage performances that ever went down in K-pop
HIGHER

Songwriter & Composer: Jun. K @Jun2daKAY
Album: Galaxy of 2PM (2016)

This is a japanese song that I couldn't just leave out because it's what she deserves
#JUNHO is the 2PM member who owns the most copyrights. He is ranked at No. 10 by KOMCA in their list idols with the most number of copyrights under their name as of January 2020.
Zero Point

Songwriter & Composer: Junho @dlwnsghek
Album: Grown (2013)
Go Back

Songwriter & Composer: Junho @dlwnsghek
Rap Making: Taecyeon @taeccool
Album: Grown (2013)
I'm in Love (Junho Solo)

Songwriter & Composer: Junho @dlwnsghek
Album: Grown Grand Edition (2013)

who let him look THAT good in a suit
Just a Feeling (Junho Solo)

Songwriter & Composer: Junho @dlwnsghek
Album: Grown Grand Edition (2013)
Love is True

Songwriters: Junho @dlwnsghek, Nichkhun @Khunnie0624
Composer: Junho @dlwnsghek
Album: Grown Grand Edition (2013)

wholesome vibes all around
Nobody Else

Songwriter & Composer: Junho @dlwnsghek
Album: No. 5 (2015)

I am looking respectfully at the female dancers
#TAECYEON has participated in the rap making of lots of 2PM songs as well as writing and composing.
Traicion (Taecyeon Solo)

Songwriter & Composer: Taecyeon @taeccool
Album: Grown Grand Edition (2013)
Call My Name

Songwriter & Composer: Taecyeon @taeccool
Album: Grown Grand Edition (2013)

overwhelming wholesomeness
About To Go Insane

Songwriter & Composer: Taecyeon @taeccool
Album: No. 5 (2015)
Magic

Songwriter & Composer: Taecyeon @taeccool
Album: No. 5 (2015)
Jump

Songwriter & Composer: Taecyeon @taeccool
Album: No. 5 (2015)
Perfume

Songwriter: Taecyeon @taeccool
Album: Gentlemen's Game (2016)
Teaser

Songwriter & Composer: Taecyeon @taeccool
Album: Galaxy of 2PM (2016)

taecyeon oppa thank you for uploading this when we were having the worst hottest drought
You can follow @hottestelf02.
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