Honoh no Tobira

{{Infobox song

| name = Honoh no Tobira

| cover =

| alt =

| type = single

| artist = FictionJunction Yuuka

| album =

| released = September 22, 2005 (JP)

| recorded = 2005

| studio =

| venue =

| genre = J-pop

| length =

| label = Victor Entertainment
VICL-35883 (Japan, CD)

| composer =

| lyricist =

| producer = Victor Entertainment

| prev_title = Akatsuki no Kuruma

| prev_year = 2004

| next_title = Silly-Go-Round

| next_year = 2006

}}

{{nihongo|"Honoh no Tobira"|焔の扉|Honō no Tobira; translated as Door of Flames}} is the fourth single of J-pop duo FictionJunction Yuuka. It was released on September 22, 2005.

This single includes an insert song of the anime Mobile Suit Gundam SEED Destiny, composed by Yuki Kajiura. There are two other versions of the song on the single (hearty and instrumental), along with its karaoke version. Its catalog number is VICL-35883. Coincidentally, the insert song of Gundam SEED (Gundam SEED Destiny's prequel), Akatsuki no Kuruma, was released exactly one year before this single.

This single peaked at #5 on the Oricon weekly charts[http://ranking.oricon.co.jp/free_contents/search/ranking_list.asp?itemcd=613213&samecd=1&chart_kbn=111&linkcd=40361897 Oricon Database for single "Honoh no Tobira"] but is the first single in voice acting history to hit #1 on the Oricon Daily Rankings.