Shinjitsu no Uta

{{Infobox song

| name = Shinjitsu no Uta

| cover =

| alt =

| type = single

| artist = Do As Infinity

| album = True Song

| released = October 30, 2002

| recorded =

| studio =

| venue =

| genre = J-pop

| length = 15:28

| label = avex trax

| writer = Dai Nagao

| producer = Dai Nagao, Seiji Kameda

| prev_title = Under the Sun / Under the Moon

| prev_year = 2002

| next_title = Mahou no Kotoba (Would You Marry Me?)

| next_year = 2002

}}

{{nihongo|"Shinjitsu no Uta"|真実の詩|}} is the fourteenth single by Do As Infinity, released in 2002.{{Cite web |title=你的童年有犬夜叉嗎？回味 D.A.I 大無限樂團唱的經典主題曲 |url=https://www.kkbox.com/tw/tc/column/features-0-2631-1.html |access-date=2022-12-12 |website=KKBOX |language=zh-hant}} It was used as the fifth ending to the anime InuYasha.{{Cite web |date=2018-06-19 |title=BAND-MAID, Do As Infinity and Shiena Nishizawa to perform in Singapore for Natsu Rock 2018 |url=https://www.bandwagon.asia/articles/band-maid-do-as-infinity-and-shiena-nishizawa-to-perform-in-singapore-for-natsu-rock-2018 |access-date=2022-12-12 |website=BAND-MAID, Do As Infinity and Shiena Nishizawa to perform in Singapore for Natsu Rock 2018 {{!}} Bandwagon {{!}} Music media championing and spotlighting music in Asia. |language=en}}{{Cite web |last=Times |first=I. D. N. |last2=Nadhiroh |first2=Fatma Roisatin |title=10 OST yang Dinyanyikan Do As Infinity, Ada Anime InuYasha! |url=https://www.idntimes.com/hype/entertainment/fatma-roisatin-nadhiroh/ost-yang-dinyanyikan-do-as-infinity-c1c2 |access-date=2022-12-12 |website=IDN Times |language=id}}

This song was included in the band's compilation album Do the A-side.