In This Diary

{{Infobox song

| name = In This Diary

| cover = The Ataris - In This Diary cover.jpg

| alt =

| type = single

| artist = the Ataris

| album = So Long, Astoria

| released = February 11, 2003

| format =

| recorded =

| studio =

| venue =

| genre = Pop punk{{cite web|url=http://blog.chron.com/miked/2014/07/the-20-best-pop-punk-songs-of-the-2000s/#photo-490567|archive-url=https://web.archive.org/web/20141011011853/http://blog.chron.com/miked/2014/07/the-20-best-pop-punk-songs-of-the-2000s/#photo%2D490567|url-status=dead|archive-date=October 11, 2014|title=The 20 best pop-punk songs of the 2000s|work=Houston Chronicle|author=Damante, Mike|date=July 16, 2014|accessdate=June 12, 2016}}

| length = 3:54

| label = Columbia

| writer = Kris Roe

| producer =

| prev_title = Summer Wind Was Always Our Song

| prev_year = 2001

| next_title = The Boys of Summer

| next_year = 2003

}}

"In This Diary" is a song recorded by American pop punk group the Ataris. It was released in February 2003 as the lead single from their fourth album So Long, Astoria. "In This Diary" was released to radio on February 11, 2003.{{cite web|url=http://www.fmqb.com/Article.asp?id=16771|title=FMQB Airplay Archive: Modern Rock|publisher=Friday Morning Quarterback Album Report, Incorporated|accessdate=October 30, 2016|archive-date=March 22, 2013|archive-url=https://web.archive.org/web/20130322142732/http://www.fmqb.com/Article.asp?id=16771|url-status=dead}} It peaked at number 11 on the U.S. Billboard Modern Rock Tracks chart. The song can be heard in the closing credits of the 2004 film The Perfect Score.