If you're a vegetarian looking to increase your protein intake without meat, there are plenty of plant-based protein sources available. Here are ten of the best protein-rich foods for vegetarians:

1. Lentils: Lentils are a great source of plant-based protein and are versatile for use in soups, stews, and salads.
2. Chickpeas: Chickpeas, also known as garbanzo beans, are rich in protein and can be used in dishes like hummus, falafel, and curries.
3. Tofu: Tofu is a soy-based product that's high in protein. It can be used in various savory and sweet recipes.
4. Quinoa: Quinoa is a complete protein source and can be used as a base for salads, grain bowls, and as a side dish.
5. Tempeh: Like tofu, tempeh is made from soybeans and is a good source of protein. It's often used in stir-fries and sandwiches.
6. Black Beans: Black beans are rich in protein and can be used in a variety of dishes, such as burritos, soups, and salads.
7. Greek Yogurt: Greek yogurt is a dairy product that's high in protein. It can be consumed on its own or as a base for smoothies and parfaits.
8. Nuts: Almonds, peanuts, and other nuts are protein-rich snacks and can be added to salads and dishes for extra protein.
9. Seeds: Chia seeds, flaxseeds, and hemp seeds are rich in protein and can be added to smoothies, yogurt, or oatmeal.
10. Eggs: If you're an ovo-vegetarian (one who consumes eggs), eggs are a fantastic source of protein and can be prepared in various ways.

Including a combination of these protein-rich foods in your diet can help ensure that you meet your protein needs as a vegetarian. Keep in mind that a well-balanced vegetarian diet should also include a variety of vegetables, fruits, and whole grains to provide all the necessary nutrients for a healthy lifestyle.