English Standard Version
So that disciple, leaning back against Jesus, said to him, “Lord, who is it?”

American Standard Version
He leaning back, as he was, on Jesus breast saith unto him, Lord, who is it?

Berean Study Bible
Leaning back against Jesus, he asked, “Lord, who is it?”

Douay-Rheims Bible
He therefore, leaning on the breast of Jesus, saith to him: Lord, who is it?

English Revised Version
He leaning back, as he was, on Jesus' breast saith unto him, Lord, who is it?

King James Bible
He then lying on Jesus' breast saith unto him, Lord, who is it?

World English Bible
He, leaning back, as he was, on Jesus' breast, asked him, "Lord, who is it?"

Young's Literal Translation
and that one having leant back on the breast of Jesus, respondeth to him, 'Sir, who is it?'

John 13:25 Additional Translations ...