Finding a place in Dublin that fits a student budget and caters to vegetarians, vegans, people who can’t eat meat or beef for religious reasons, or people with food allergies, is a challenge. Especially when you are trying to find a place for a group of people that meets all the criteria above.
Many lists exist but piecing together all criteria for individual needs is a troublesome process.
So here is a map of student-tested restaurants that serve vegetarian and vegan meals and offer gluten or dairy-free options at a reasonable price.
green: cheap, yellow: okay, orange: more expensive
Umi Falafel has a fully vegetarian menu with many vegan options. They also include a lot of gluten-free and dairy-free options.
At Umi Falafel, you get a variety of falafel, salads, dips, sandwiches, homemade juices and lemonade, tea, coffee, and soft drinks.
Ladurée is a French café and bakery. It is the most expensive place on this list but it is worth a visit. They serve different pastries and macarons. The good thing about macarons is, that they are gluten-free. At Ladurée they even have some dairy-free options

Checkpoint Pizza is the place that fulfills all your pizza-related needs. They serve wood-fired pizza, fries, and chicken. This is Pizza so there are no gluten-free or dairy-free options but you can
The Happy Pear Clondalkin is a cafe that also serves breakfast and warm meals. All of their food is vegetarian, many meals are vegan. The selection of gluten-free and dairy-free food is small but delicious. The Clondalkin café is a bit outside of the main Dublin area but if you are close by it is worth a visit. It is also connected to a small museum about the history of Clondalkin Roundtower that is right next to the café.

Aleena Indian Restaurant has been around for over 25 years. It serves a wide range of typical Indian meals ranging from mild to spicy. There are a lot of vegetarian options and the prices are very student-friendly. The restaurant itself is relatively small, so maybe call or get a table online ahead of your visit.

Hailan is a Korean restaurant but also serves Japanese and Chinese food. There vegetarian options along with gluten-free or dairy-free options but it’s best to talk to the staff. Also, the portions are huge.
Nutty Delights is not a restaurant but a shop that sells roasted nuts, seeds, dried fruits, and nut