Who composed the song “Yellow Submarine” by John Lennon?

The song “Yellow Submarine” by John Lennon was composed by John Lennon and Paul McCartney.

Yellow Submarine

John Lennon / Paul McCartney

In the town where i was born
Lived a man who sailed to sea
And he told us of his life
In the land of submarines

So we sailed up to the sun
Till we found a sea of green
And we lived beneath the waves
In our yellow submarine

We all live in a yellow submarine
Yellow submarine, yellow submarine
We all live in a yellow submarine
Yellow submarine, yellow submarine

And our friends are all aboard
Many more of them live next door
And the band begins to play

We all live in a yellow submarine
Yellow submarine, yellow submarine
We all live in a yellow submarine
Yellow submarine, yellow submarine

As we live a life of ease
Everyone of us has all we need
Sky of blue and sea of green
In our yellow submarine

We all live in a yellow submarine
Yellow submarine, yellow submarine
We all live in a yellow submarine
Yellow submarine, yellow submarine