Once Upon a Time... Planet Earth

{{More citations needed|date=June 2019}}

{{Infobox television

| image = Once Upon a Time Planet Earth.jpg

| caption = DVD box set cover art

| camera =

| runtime = 25 minutes

| creator = Albert Barillé

| company = {{Plainlist|

• Procidis
• France 3
• Centre National de la Cinematographie
• Directorate-General for Research
• European Broadcasting Union}}

| executive_producer =

| voices = Roger Carel
Annie Balestra
Olivier Destrez
Alain Dorval

| narrated =

| country = France

| network = France 3

| first_aired = {{start date|2008|12|22|df=y}}

| last_aired =

| num_episodes = 26

| related = {{Plainlist|

• Once Upon a Time... The Explorers (1996)
• Once Upon a Time... The Objects (2023)

}}

}}

Once Upon a Time... Planet Earth (French: Il était une fois... notre Terre) is a children's television educational animated series directed by Albert Barillé. It is the seventh series in the Once Upon a Time... franchise.

The series was produced by Procidis and France 3 with the support of the Centre National de la Cinematographie, the Directorate-General for Research of the European Commission and the European Broadcasting Union (EBU). The series was initially broadcast since 22 December 2008 on France 3. Its original premise was set up from "Once Upon a Time... the Earth (and Tomorrow?)", the final episode of the first series Once Upon a Time... Man, thus finally going back to the beginning where it all started and ended. The series' premiere also coincided with the 30th anniversary milestone of the franchise.