We noticed that you're using an unsupported browser. The TripAdvisor website may not display properly.We support the following browsers:
Windows: Internet Explorer, Mozilla Firefox, Google Chrome. Mac: Safari.

Millennium Diner

156 E Main St, Smithtown, NY 11787-2869
+1 631-724-5556
Map updates are paused. Zoom in to see updated info.
Reset zoom
Updating Map...
  • Excellent16%
  • Very good26%
  • Average34%
  • Poor10%
  • Terrible14%
Travellers talk about
“local diner” (4 reviews)
“soup or salad” (2 reviews)
Restaurant Hours
American, Diner
$$ - $$$
156 E Main St, Smithtown, NY 11787-2869
All Details
Write a ReviewReviews (56)
Traveller rating
Traveller type
Time of year

1 - 10 of 56 reviews

Reviewed 14 May 2018

Typical but great diner fare. Service is very friendly and prices are reasonable. Salads are delicious and generous.

Thank judyoconnor057
Reviewed 19 April 2018

Coming here a long time with always good results. But now staff has changed and cook is terrible. Our last two visits the food was awful. First visit: ordered the salad with cranberries and pecans except it was all greens with a few strawberries thrown...More

Reviewed 3 January 2018 via mobile

Stopped in unexpectedly and was pleasantly surprised by prices, portions and extra friendly staff. The Greek food was nicely prepared and the patty-melt had a great burger. Good lighting and lots if room between tables.

Thank David G
Reviewed 6 December 2017 via mobile

I have been going to Millennium since the mid 1980’s when as teenagers we would go there for late nite snacks after getting out of work at the nearby Friendly’s (leave one restaurant to eat at another - I guess for the change of pace...More

Thank Measuretwice8
Reviewed 12 October 2017

Food is terrible. The only diner with an empty parking lot because people have caught on. Last time we had dinner my husband ordered a hamburger. No Cole slaw, lettuce, tomato, pickle...Nothing. The hamburger was over done & on a stale bun. It looked like...More

Thank jflo812
Reviewed 24 July 2017

The gyro omelette is one of a kind. I always order it. Other people have commented on the staff and I have to agree they need some attitudinal adjustment. Years ago one started a fight with my companion and I had to ask for a...More

Thank Bob R
Reviewed 2 July 2017

Visited this diner many times through the years and the prices have done up dramatically and the quality of the food has changed. Much better years ago and not worth the money today.

Thank ForeverAruba2000
Reviewed 30 June 2017

Good food, but it is overpriced in comparison to neighboring diners. Their desserts are very good as well.

Thank Nicole C
Reviewed 26 May 2017 via mobile

Extensive menu- great staff friendly/ welcoming...a great place for a neighborhood dining- good sized portions. Clean.

Thank Rachell D
Reviewed 19 April 2017 via mobile

We come here often for different meals. Breakfast has specials in addition to regular choices as do lunch. Dinner specials include a glass if wine, appetizer, soup or salad, entrée, desert and coffee. Deserts are a choice of any from a large selection of bakery...More

Thank Marilyn F
Nearby HotelsSee all Smithtown Hotels
Americas Best Value Inn, Smithtown
26 reviews
2.19 km away
Residence Inn Long Island Hauppauge/Islandia
218 reviews
4.21 km away
Smithtown Inn
9 reviews
4.33 km away
Hyatt Regency Long Island
955 reviews
4.72 km away
Nearby Restaurants
Alpine Pastry Shop
109 reviews
.23 km away
Chop Shop
137 reviews
.43 km away
The Garden Grill
87 reviews
.36 km away
Butera's Restaurant of Smithtown
141 reviews
.37 km away
Nearby Attractions
Escape Zone Long Island
17 reviews
3.69 km away
Sunken Meadow State Park
102 reviews
4.03 km away
St. James General Store
20 reviews
4.19 km away
Blydenburgh Park
36 reviews
4.27 km away
Questions & Answers
Get quick answers from Millennium Diner staff and past visitors.
Note: your question will be posted publicly on the Questions & Answers page.
Posting guidelines
Improve this listing

Restaurant Details

Rating summary
  • Food
  • Value
American, Diner
Breakfast, Lunch, Dinner
Restaurant features
Takeout, Seating, Waitstaff, Wheelchair Accessible, Serves Alcohol
Good for
Groups, Child-friendly, Kids
Location and Contact Information
  • Address: 156 E Main St, Smithtown, NY 11787-2869
  • Location: United States  >  New York (NY)  >  Long Island  >  Smithtown
  • Phone Number: +1 631-724-5556
Is This Your TripAdvisor Listing?
Own or manage this property? Claim your listing for free to respond to reviews, update your profile and much more. Claim Your Listing