Psalm 117 calls on whom to praise the LORD?

Answer: All you nations

Psalm 117 begins, "Praise the LORD, all you nations! Extol Him, all you peoples!" for His loving devotion is great toward us.

“Praise the LORD, all you nations! Extol Him, all you peoples! For great is His loving devotion toward us, and the faithfulness of the LORD endures forever. Hallelujah!”— Psalm 117:1-2 (BSB)