Prepare the Ingredients. Start by gathering all your ingredients. Drain the smoked tuna and set it aside. Make sure the cream cheese is softened to room temperature for easier blending.
Blend the Base. In a large mixing bowl, combine the cream cheese, mayonnaise, and sour cream. Use an electric mixer or a whisk to blend until smooth and creamy.
Add the Flavor. Add the smoked tuna, lemon juice, Worcestershire sauce, smoked paprika, and garlic powder to the bowl. Mix until all the ingredients are well incorporated.
Season to Taste. Stir in the chopped green onions and season with salt and pepper to taste. Adjust the seasoning as needed.
Serve and Enjoy. Transfer the dip to a serving bowl and garnish with additional green onions if desired. Serve with crackers, chips, or vegetable sticks.