Budget

BBQ and BBQ Teppanyaki are two parts of the same restaurant.  Lying opposite each other, they make some of the best yakitori in town. Be sure to get there early, as both fill up quickly every night of the week.
Busy and popular spot serves a mean Pho as well as a whole host of other Vietnamese specialities.  Great for a quick and cheap lunch as well as dinner.
Quaint neighbourhood café serving simple French influenced food.
If you love good roast chicken, then La Rotisserie is probably the best in Hong Kong.  Three shops offer authentic take away, slow roasted chicken. The Wan Chai and Sai Ying Pun stores are closed on Mondays, while the Central store is closed Sundays.
Phukets Thai is an excellent location to get your authentic Thai fix! The bright décor and friendly service ensure a lovely time for all. Delivery also available. Hours: 11:00 – 22:00 daily  
Tai Hang has a couple of good pizza joints, and PizzaZaZa is one of them.  Tasty thin crust pizzas and homemade pastas with rich and delicious sauces make this a great place for a relaxed lunch or dinner.
Pizzeria Italia has a great range of pizzas available, and they make a mighty good home-made tomato sauce.  Enjoy a red wine with friends in their street-side outdoor area (a fantastic place for some good, old-fashioned people watching!). Online delivery also available. Hours: 12:00 – 23:00 daily
When the government decided to force out the dai pai dongs, restaurant owners took their businesses inside to Cooked Food Markets. Queen Street Cooked Food Market is where you want to go if a) you have fussy friends or b) you can’t decide what cuisine to opt for. Here you have Cantonese, Thai, Indian/Nepalese and …
Quick and simple Thai food. Gets busy so you may have to wait for a table.
Japanese skewer restaurant, open till late and the food is pretty delicious!  Sometimes the service can be a bit hit or miss but the food makes up for it.  The Happy Valley branch is very small so not great for groups.