In a bowl, mix together melted butter, buffalo sauce, and ranch seasoning mix until well combined.

Add the oyster crackers to the bowl with the seasoning mixture and toss until all the crackers are evenly coated.

Preheat your air fryer to 350°F (175°C) for a few minutes.

Spread the coated oyster crackers in a single layer in the air fryer basket. Depending on the size of your air fryer, you may need to work in batches.

Air fry the crackers for 5-7 minutes, shaking the basket halfway through to ensure even cooking. The crackers are done when they are golden brown and crispy.

Once cooked, remove the crackers from the air fryer and let them cool for a few minutes before serving. Enjoy them as a tasty snack or as a crunchy topping for salads, soups, or dips.