MonStar

{{unreliable sources|date=September 2021}}

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{{Infobox song

| name = MonStAR

| cover =

| alt =

| type = single

| artist = Aya Hirano

| album =

| released = December 5, 2007

| recorded =

| studio =

| venue =

| genre = J-pop

| length =

| label = Lantis

| composer =

| lyricist =

| producer =

| prev_title = Neophilia

| prev_year = 2007

| next_title = Unnamed World

| next_year = 2008

}}

"MonStAR" is a CD single by Japanese singer and voice actress Aya Hirano. It was released on December 5, 2007 and was produced by Lantis.{{cite web|url=http://www.lantis.jp/new-release/data2.php?id=13798c4ef5410e86566760ec52442d84|title=MonStAR at Lantis.jp|accessdate=2007-11-26|language=Japanese}}{{cite web|url=http://www.cdjapan.co.jp/detailview.html?KEY=LACM-4436|title=MonStAR at CDJapan.co.jp|accessdate=2007-11-26|language=Japanese}}{{cite web|url=http://us.yesasia.com/en/PrdDept.aspx/section-music/code-j/version-all/aid-1175701/pid-1005062921/|title=MonStAR at YesAsia.com|accessdate=2007-11-26|language=Japanese}} This is Aya Hirano's sixth maxi single and her third and last release from her three-month consecutive single release campaign.