Food sources of Vitamin D (from webmd)

http://www.m.webmd.com/food-recipes/guide/calcium-vitamin-d-foods?page=2

It's a lot harder to get enough vitamin D from foods. Vitamin D is only in a few foods and often in very small amounts. Foods that provide vitamin D include:

Fatty fish (like tuna, mackerel, and salmon)
Foods fortified with vitamin D, like some dairy products, orange juice, soy milk, and cereals
Beef liver
Cheese
Egg yolks

Getting enough vitamin D from your diet isn't easy. Studies show that only about 20% of our vitamin D typically comes from the foods we eat.

Your body can also make vitamin D on its own. When you walk out into the sunlight with exposed skin, your body naturally produces vitamin D on its own.