View source for OK!

{{samename|CD single|OK! (single)}}
{{samename|Thai ending theme|OK}}
{{PrevNext|
prev=The Rivals |
nextlink=Aim to Be a Pokémon Master#Opening animation: TV OP 4 |
next=Aim to Be a Pokémon Master (Whiteberry) |
list=Japanese opening themes |
colorscheme=Johto}}
{{Song|
type=TV OP 3 |
language=en |
title=OK! |
transliterated= |
translated= |
screen=yes|
screenshot=OPJ03.png|
artist=ja |
artistname=[[Rica Matsumoto|松本梨香]] |
artistname_ro=Rica Matsumoto |
lyricist=ja |
lyricistname=[[Akihito Toda|戸田昭吾]] |
lyricistname_ro=Akihito Toda |
composer=ja |
composername=[[Hirokazu Tanaka|たなか　ひろかず]] |
composername_ro=Hirokazu Tanaka |
arranger=ja |
arrangername=[[Hirokazu Tanaka|たなか　ひろかず]] |
arrangername_ro=Hirokazu Tanaka |
choreographer=none |
choreographername= |
choreographername_ro= |
album=en |
albumtype=single |
albumtitle={{OBP|OK!|single}} |
albumtitle_ro= |
catalognumber=ZMDP-1062 |
recordcompany=[[Pikachu Records]] |
colorscheme=Johto |
footnotes=The producer of this song is 吉田隆 ''Yoshida Takashi''.
}}

'''OK!''' is the third Japanese opening theme of the [[original series]]. It was also used as the opening theme of ''[[M03|Emperor of the Crystal Tower: Lord of the Unknown Tower]]'' in a version called ''OK! 2000''. It was used as well in ''[[Mewtwo Returns|Mewtwo! I am here!: Mewtwo Lives]]''.

It debuted in [[EP117]] and was replaced by the Whiteberry Version of [[Aim to Be a Pokémon Master]] in [[EP192]]. It has been noted that the OP visuals were used with very little change or rearranging for the third theme song for the English [[dub]], [[Pokémon Johto]].