New International Version
Daughter Babylon, doomed to destruction, happy is the one who repays you according to what you have done to us.

American Standard Version
O daughter of Babylon, that art to be destroyed, Happy shall he be, that rewardeth thee As thou hast served us.

Berean Study Bible
O Daughter of Babylon, doomed to destruction, blessed is he who repays you as you have done to us.

Douay-Rheims Bible
O daughter of Babylon, miserable: blessed shall he be who shall repay thee thy payment which thou hast paid us.

English Revised Version
O daughter of Babylon, that art to be destroyed; happy shall he be, that rewardeth thee as thou hast served us.

King James Bible
O daughter of Babylon, who art to be destroyed; happy shall he be, that rewardeth thee as thou hast served us.

World English Bible
Daughter of Babylon, doomed to destruction, he will be happy who rewards you, as you have served us.

Young's Literal Translation
O daughter of Babylon, O destroyed one, O the happiness of him who repayeth to thee thy deed, That thou hast done to us.

Psalm 137:8 Additional Translations ...