Preheat your oven to 350 degrees Fahrenheit (175 degrees Celsius) and prepare muffin tins by lining them with paper liners (24 muffins).
In a large bowl, whisk together the pumpkin puree, eggs, sugar, vegetable oil and the orange juice and zest until smooth.
Add the flour, baking soda, salt and spices and combine with a rubber spatula until no streaks of flour remain.
Stir in the cranberries gently.
Portion the batter into each of the 24 prepared muffin cups, distributing the batter evenly.
Bake at 350 degrees Fahrenheit (175 degrees Celsius) for about 25 minutes, or until a toothpick inserted into one of the muffins comes out clean.
Cool on a wire rack in their tins for about 10 minutes before removing them from their tins to cool completely.