Skip to main content
Menu close text
Marriott Logo
Marriott Logo
Help

Select a Language

English(US)

MGM National Harbor

MGM National Harbor

VIEW MAP VIEW MAP
+1 301-971-5000
Cancel
DATES (1 NIGHT) NIGHTS)
Flexible in
S M T W T F S
Number of Nights
1
Rooms & Guests
Maximum 8 guests per room
Rooms
(Max: 3 Rooms/person)
1
Adults
(Max: 8 total guests/room)
1
Children
(Max: 8 total guests/room)
0
AGE OF CHILDREN (REQUIRED)
Special Rates
  • Meeting room, tables, chairs, large windows
Credit Card
Earn 3 Free Nights + 50,000 Bonus Points
Learn More

Events

Start Planning Your Meetings or Events Here

Tell us about your event, then we'll contact you and plan it together

Start Your Plan Here

13

Event Rooms

49870 SQ FT

Total Event Space

1800

Capacity Largest Space
Capacity Chart | Equipment and Services
Groups Earn Points at MGM Collection
Marriott Bonvoy is pleased to offer program benefits for event planners that sign new event contracts at this destination, regardless of the MGM Resorts group booking channel. Members attending an event can enjoy benefits when they stay and pay independently using a qualified rate.
Learn More

Meetings and Events

Specializing in groups of 10-500, you can expect exceptional service and flexible meeting spaces.

Learn More
Let our experienced team take care of the details with our award-winning culinary program.
Our 50,000 square feet of meeting spaces offer state-of-the-art technology.

Offers & Packages

View All Offers

Weddings and Occasions

MGM National Harbor offers over 50,000 square feet of event space and other unique venue offerings.

Learn More
Dream weddings don't just happen, they're planned. Marriott Certified Wedding Planners are trained to help. After completing demanding coursework, each Marriott Certified Wedding Planner is qualified to coordinate weddings of all types, including ethnic and military weddings. Relying on experience, training, tradition and old-fashioned intuition, Marriott Certified Wedding Planners can help you determine an overall vision for your wedding and help you execute each detail. That includes setting an event budget; deciding on a menu; arranging table settings; and finding florists, photographers, a band and other entertainment for the big day.
Offering breathtaking terrace views and private dining rooms, we have something for every dream.
Explore the full array of services and amenities MGM National Harbor has to offer.
private dining austin
Rewarding Travel from Start to Finish
Earn up to 60,000 points per qualified event with Marriott Bonvoy Events. Elite members earn more with bonus points.
See how we're rewarding events

Please note: all room sizes are approximate.

Feet Meters
Meeting Room Dimensions (LxWxH) Area (sq.ft) Theater Schoolroom Conference U-Shape Reception Banquet
MGM Grand Ballroom 99x163x24.3 16137 1600 900 132 144 1800 1800
Salon A 99.0x73.0x24.3 7227.0 800 450 56 72 500 500
Salon B 49.0x73.0x24.3 3577.0 400 225 44 48 250 250
Salon C 49.0x73.0x24.3 3577.0 400 225 44 48 250 250
Salon B-C 99.0x73.0x24.3 7227.0 800 450 56 72 500 500
ARIA 54x34x12 1836 208 90 42 42 124 124
Beau Rivage 54x34x12 1836 208 90 42 42 124 124
Mandalay Bay 54x34x12 1836 208 90 42 42 124 124
Bellagio Ballroom 84x51x19.6 4284 378 180 70 81 305 305
Section 1 35.0x51.0x19.6 1785.0 148 72 35 39 130 130
Section 2 49.0x51.0x19.6 2499.0 230 108 35 42 175 175
The Cosmopolitian Boardroom 1 18x36x11.6 648 - - 18 - - -
The Cosmopolitian Boardroom 2 18x36x11.6 648 - - 18 - - -
Meeting Planner Office 22x15x8.1 330 - - 8 - - -
MGM Grand Ballroom
Dimensions (LxWxH)
99x163x24.3
Area (sq.ft)
16137
Theater
1600
Schoolroom
900
Conference
132
U-Shape
144
Reception
1800
Banquet
1800
Salon A
Dimensions (LxWxH)
99.0x73.0x24.3
Area (sq.ft)
7227.0
Theater
800
Schoolroom
450
Conference
56
U-Shape
72
Reception
500
Banquet
500
Salon B
Dimensions (LxWxH)
49.0x73.0x24.3
Area (sq.ft)
3577.0
Theater
400
Schoolroom
225
Conference
44
U-Shape
48
Reception
250
Banquet
250
Salon C
Dimensions (LxWxH)
49.0x73.0x24.3
Area (sq.ft)
3577.0
Theater
400
Schoolroom
225
Conference
44
U-Shape
48
Reception
250
Banquet
250
Salon B-C
Dimensions (LxWxH)
99.0x73.0x24.3
Area (sq.ft)
7227.0
Theater
800
Schoolroom
450
Conference
56
U-Shape
72
Reception
500
Banquet
500
ARIA
Dimensions (LxWxH)
54x34x12
Area (sq.ft)
1836
Theater
208
Schoolroom
90
Conference
42
U-Shape
42
Reception
124
Banquet
124
Beau Rivage
Dimensions (LxWxH)
54x34x12
Area (sq.ft)
1836
Theater
208
Schoolroom
90
Conference
42
U-Shape
42
Reception
124
Banquet
124
Mandalay Bay
Dimensions (LxWxH)
54x34x12
Area (sq.ft)
1836
Theater
208
Schoolroom
90
Conference
42
U-Shape
42
Reception
124
Banquet
124
Bellagio Ballroom
Dimensions (LxWxH)
84x51x19.6
Area (sq.ft)
4284
Theater
378
Schoolroom
180
Conference
70
U-Shape
81
Reception
305
Banquet
305
Section 1
Dimensions (LxWxH)
35.0x51.0x19.6
Area (sq.ft)
1785.0
Theater
148
Schoolroom
72
Conference
35
U-Shape
39
Reception
130
Banquet
130
Section 2
Dimensions (LxWxH)
49.0x51.0x19.6
Area (sq.ft)
2499.0
Theater
230
Schoolroom
108
Conference
35
U-Shape
42
Reception
175
Banquet
175
The Cosmopolitian Boardroom 1
Dimensions (LxWxH)
18x36x11.6
Area (sq.ft)
648
Theater
-
Schoolroom
-
Conference
18
U-Shape
-
Reception
-
Banquet
-
The Cosmopolitian Boardroom 2
Dimensions (LxWxH)
18x36x11.6
Area (sq.ft)
648
Theater
-
Schoolroom
-
Conference
18
U-Shape
-
Reception
-
Banquet
-
Meeting Planner Office
Dimensions (LxWxH)
22x15x8.1
Area (sq.ft)
330
Theater
-
Schoolroom
-
Conference
8
U-Shape
-
Reception
-
Banquet
-
Meeting Room Dimensions (LxWxH) Area (sq.mt) Theater Schoolroom Conference U-Shape Reception Banquet
MGM Grand Ballroom 30.2x49.7x7.4 1499.2 1600 900 132 144 1800 1800
Salon A 30.2x22.2x7.4 671.4 800 450 56 72 500 500
Salon B 14.9x22.2x7.4 332.3 400 225 44 48 250 250
Salon C 14.9x22.2x7.4 332.3 400 225 44 48 250 250
Salon B-C 30.2x22.2x7.4 671.4 800 450 56 72 500 500
ARIA 16.5x10.4x3.7 170.6 208 90 42 42 124 124
Beau Rivage 16.5x10.4x3.7 170.6 208 90 42 42 124 124
Mandalay Bay 16.5x10.4x3.7 170.6 208 90 42 42 124 124
Bellagio Ballroom 25.6x15.5x6 398 378 180 70 81 305 305
Section 1 10.7x15.5x6 165.8 148 72 35 39 130 130
Section 2 14.9x15.5x6 232.2 230 108 35 42 175 175
The Cosmopolitian Boardroom 1 5.5x11x3.5 60.2 - - 18 - - -
The Cosmopolitian Boardroom 2 5.5x11x3.5 60.2 - - 18 - - -
Meeting Planner Office 6.7x4.6x2.5 30.7 - - 8 - - -
MGM Grand Ballroom
Dimensions (LxWxH)
30.2x49.7x7.4
Area (sq.mt)
1499.2
Theater
1600
Schoolroom
900
Conference
132
U-Shape
144
Reception
1800
Banquet
1800
Salon A
Dimensions (LxWxH)
30.2x22.2x7.4
Area (sq.mt)
671.4
Theater
800
Schoolroom
450
Conference
56
U-Shape
72
Reception
500
Banquet
500
Salon B
Dimensions (LxWxH)
14.9x22.2x7.4
Area (sq.mt)
332.3
Theater
400
Schoolroom
225
Conference
44
U-Shape
48
Reception
250
Banquet
250
Salon C
Dimensions (LxWxH)
14.9x22.2x7.4
Area (sq.mt)
332.3
Theater
400
Schoolroom
225
Conference
44
U-Shape
48
Reception
250
Banquet
250
Salon B-C
Dimensions (LxWxH)
30.2x22.2x7.4
Area (sq.mt)
671.4
Theater
800
Schoolroom
450
Conference
56
U-Shape
72
Reception
500
Banquet
500
ARIA
Dimensions (LxWxH)
16.5x10.4x3.7
Area (sq.mt)
170.6
Theater
208
Schoolroom
90
Conference
42
U-Shape
42
Reception
124
Banquet
124
Beau Rivage
Dimensions (LxWxH)
16.5x10.4x3.7
Area (sq.mt)
170.6
Theater
208
Schoolroom
90
Conference
42
U-Shape
42
Reception
124
Banquet
124
Mandalay Bay
Dimensions (LxWxH)
16.5x10.4x3.7
Area (sq.mt)
170.6
Theater
208
Schoolroom
90
Conference
42
U-Shape
42
Reception
124
Banquet
124
Bellagio Ballroom
Dimensions (LxWxH)
25.6x15.5x6
Area (sq.mt)
398
Theater
378
Schoolroom
180
Conference
70
U-Shape
81
Reception
305
Banquet
305
Section 1
Dimensions (LxWxH)
10.7x15.5x6
Area (sq.mt)
165.8
Theater
148
Schoolroom
72
Conference
35
U-Shape
39
Reception
130
Banquet
130
Section 2
Dimensions (LxWxH)
14.9x15.5x6
Area (sq.mt)
232.2
Theater
230
Schoolroom
108
Conference
35
U-Shape
42
Reception
175
Banquet
175
The Cosmopolitian Boardroom 1
Dimensions (LxWxH)
5.5x11x3.5
Area (sq.mt)
60.2
Theater
-
Schoolroom
-
Conference
18
U-Shape
-
Reception
-
Banquet
-
The Cosmopolitian Boardroom 2
Dimensions (LxWxH)
5.5x11x3.5
Area (sq.mt)
60.2
Theater
-
Schoolroom
-
Conference
18
U-Shape
-
Reception
-
Banquet
-
Meeting Planner Office
Dimensions (LxWxH)
6.7x4.6x2.5
Area (sq.mt)
30.7
Theater
-
Schoolroom
-
Conference
8
U-Shape
-
Reception
-
Banquet
-
Banquet
Generally used for meals and sessions involving small group discussions. A five foot round table seats eight people comfortably. A six foot round table seats 10 people comfortably.
Conference and Hollow Square
Appropriate for interactive discussions and note-taking sessions for fewer than 25 people. Many hotels have elegant "boardrooms" for 10 to 20 people, equipped with full audiovisual capabilities, a writing board, cork board and a flip chart.
E-Shape, U-Shape and T-Shape
Appropriate for groups of fewer than 40 people. These are best for interaction with a leader seated at the head of the setup. Audiovisual is usually best set up at the open end of the seating.
Theater
Appropriate for large sessions and short lectures that do not require extensive note-taking. This is a convenient setup to use before breaking into discussion or role-playing groups because chairs can be moved.
Reception
Stand-up social function where beverages and light foods are served. Foods may be presented on small buffet tables or passed by servers. May precede a meal function.
Schoolroom or Classroom
The most desirable setup for medium to large-size lectures. Requires a relatively large room. Tables provide attendees with space for spreading out materials and taking notes.
Ovals and Rounds
Generally used for meals and sessions involving small group discussions. A five foot round table seats eight people comfortably. A six foot round table seats 10 people comfortably.

Audio-Visual Equipment

  • AV Technician
  • Film Projector with Screen
  • LCD Projector
  • Microphone
  • PA System
  • TV
  • TV Production Service Provider
  • Teleconferencing
  • Videoconferencing

Event Services

  • Carpenter
  • Certified Meeting Planner
  • Decorator
  • Electrician
  • Event Lighting
  • Locksmith
  • Message Service
  • Photographer
  • Registration Service
  • Security Guards

Event Equipment & Supplies

  • Direction Signs
  • Easels
  • Flip Chart & Markers
  • Name Cards
  • Pens / Pencils / Notepad
  • Podium Lectern
  • Stack Chairs
  • Tables
  • Wall Charts

Business Services

  • Overnight Delivery/Pickup

Frequently Asked Questions

MGM National Harbor has 13 event rooms.

The largest capacity event room is the MGM Grand Ballroom. It has a capacity of 1800.

Yes, MGM National Harbor provides wedding services.

To book a meeting or event at MGM National Harbor click here

© 1996 – 2026 Marriott International, Inc. All rights reserved. Marriott Proprietary Information

English
Careers Opens a new window Terms of Use Program Terms & Conditions Privacy Center Digital Accessibility Sustainability in the Supply Chain Site Map Hotel Site Map Help Opens a new window