Anyone who was at school in the 1970s, even if they didn’t attend a church school, probably learnt the “Crimond” version:
My own favourite is the version by Howard Goodall. Those who know the BBC series The Vicar of Dibley will know the first and last verses, but may not know the middle bit. Here the Choir Boys sing it:
Here’s a Greek Orthodox version ... in greek:
The version we use at church is composed by Stuart Townend. I couldn't find it sung on YouTube, but here's the tune:
[Update - I did find a version with the words:]
Even a hip hop version (well, kind of):
One by John Rutter
Here’s an odd version composed by Joel Navarro, and performed by Sole Voce of Los Angeles
...and a version composed by an Australian opera singer Jason Barry-Smith and performed by an Australian youth choir:
Here’s Bob Chilcott's setting:
... and Keith Green's song:
Psalm 23 must be the best known psalm in entire psalter, and is probably one of the best know passages of the entire bible. Here are the words from the King James Authorized translation:
The LORD is my shepherd; I shall not want.
He maketh me to lie down in green
pastures: he leadeth me beside the still waters.
He restoreth my soul: he
leadeth me in the paths of righteousness for his name's sake.
Yea, though I
walk through the valley of the shadow of death, I will fear no evil: for thou
art with me; thy rod and thy staff they comfort me.
Thou preparest a table
before me in the presence of mine enemies: thou anointest my head with oil; my
cup runneth over.
Surely goodness and mercy shall follow me all the days of
my life: and I will dwell in the house of the LORD for ever.
[Update: thank you to my contributor for pointing out the version known as Brother James' Air, which is in fact, the one we use at church. I didn't know it was called that, which is why I missed it. Here's a youtube example