The companies with mobile apps in Maryland are large organizations. Many are in hospitality, such as Marriott International, which manages 9,000 hotels worldwide, Aloft Hotels, offering contemporary spaces, and AC Hotels by Marriott, focusing on essential urban experiences. Other sectors include retail with Under Armour, designing performance apparel, and Royal Farms, operating over 240 stores. Hughes provides broadband equipment and services, while WSSC Water is a leading water utility. This selection of companies highlights a concentration of hospitality businesses, particularly around Bethesda. Many of these organizations, like MedStar Union Memorial Hospital, founded in 1854, and WSSC Water, established in 1918, have a long history, indicating well-established operations in the region.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Marriott Internationalmarriott.com
Management and operation of approximately 9,000 hotels and resorts across more than 30 brands in 141 countries worldwide. |
240,261 | |||
| 2 |
Under Armourunderarmour.com
Design and develop innovative performance apparel, footwear, and gear focused on enhancing athletes' training, competition, and recovery experiences. |
13,004 | |||
| 3 |
Hugheshughes.com
Provides broadband equipment, services, and network operations to millions of consumers, businesses, and governments worldwide via satellite and multi-transport technologies. |
3,209 | |||
| 4 |
Aloft Hotelsaloft-hotels.marriott.com
Aloft hotels offer unique, contemporary spaces with vibrant social scenes and innovative programming for the next generation of global travelers |
3,090 | |||
| 5 |
Royal Farmsroyalfarms.com
Operating over 240 stores on the East Coast, this company offers fresh foods, dairy products, convenience items, and gasoline products |
2,814 | |||
| 6 |
AC Hotels by Marriottac-hotels.marriott.com
AC Hotels by Marriott offers stylish, modern accommodations with a focus on essentials, European-inspired breakfast, flexible dining options, and a unique urban experience for travelers worldwide |
2,570 | |||
| 7 |
Choice Hotels Internationalchoicehotels.com
Global lodging franchisor managing 22 brands across upscale and midscale segments, supporting thousands of hotels and offering a rewards program for travelers. |
2,000 | |||
| 8 |
Mariner Financemarinerfinance.com
A consumer finance company offering creative, flexible, and convenient lending options with a focus on superior customer service and community relationships |
1,729 | |||
| 9 |
WSSC Waterwsscwater.com
A leading water and wastewater utility established in 1918, serving 19 million residents with a vast network of pipelines meeting federal standards |
1,448 | |||
| 10 |
Live! Casino & Hotel Marylandlivech.com
A large commercial casino & hotel offering a variety of gaming options, luxury accommodations, dining choices, event venues, and entertainment experiences |
1,334 | |||
| 11 |
SAGE Dining Servicessagedining.com
Established in 1990, this company provides campus dining and upscale catering services to independent schools and private colleges, emphasizing great food, nutrition, and sustainability |
1,332 | |||
| 12 |
MedStar Franklin Square Medical Centermedstarhealth.org
A top community teaching hospital providing leading-edge medical services, recognized for excellence in nursing and quality care Contact for appointments |
1,190 | |||
| 13 | 1,147 | ||||
| 14 |
CALVERT COUNTY PUBLIC SCHOOLScalvertnet.k12.md.us
A public school system in Calvert County, Maryland, educating over 16,000 students in 24 schools with a focus on excellence and collaboration |
1,102 | |||
| 15 |
MedStar Union Memorial Hospitalmedstarhealth.org
A leading not-for-profit acute care teaching hospital specializing in cardiac care, orthopaedics, sports medicine, and various outpatient services in Maryland |
910 | |||
| 16 |
Glory Days Grillglorydaysgrill.com
A family restaurant chain offering affordable prices, sports-themed atmosphere, award-winning menus, large screen TVs, catering services, and private banquet facilities |
869 | |||
| 17 |
citizenM hotelsmarriott.com
An integrated hotel brand catering to modern urban travellers, offering stylish, affordable accommodations in prime city locations with high profitability |
831 | |||
| 18 |
Bethesda Game Studiosbethesdagamestudios.com
Award-winning game development team known for creating groundbreaking titles like The Elder Scrolls and Fallout series, with multiple 'Game of the Year' awards |
770 | |||
| 19 |
Baltimore Ravensbaltimoreravens.com
An NFL team with multiple Super Bowl wins, a commitment to diversity, community service, and a mission to win games while serving fans |
759 | |||
| 20 |
The Y in Central Marylandymaryland.org
A cause-driven organization offering diverse professionals meaningful careers to inspire others and make a positive impact on the community |
748 | |||
| 21 |
Sandy Spring Bankatlanticunionbank.com
A premier community bank in the Greater Washington, DC region offering commercial and retail banking, mortgage, wealth management, and trust services |
685 | |||
| 22 |
Columbia Associationcolumbiaassociation.org
A non-profit service corporation managing a master planned community in Columbia, MD, providing recreational, cultural, and community services while enhancing overall quality of life |
666 | |||
| 23 |
Ahmadiyya Muslim Communityalislam.org
A not-for-profit religious entity associated with the Ahmadiyya Muslim Community |
633 | |||
| 24 |
Tower Federal Credit Uniontowerfcu.org
Member-owned financial institution offering a variety of products and services, with headquarters in Maryland and serving over 210,000 members worldwide through branches and digital banking |
622 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 25 |
SECU Credit Unionlinktr.ee
Maryland's largest credit union, offering financial services, customer support, and community outreach like scholarships and financial education, with many locations and online banking. |
532 | |||
| 26 |
Bach to Rock: America's Music Schoolbachtorock.com
Music school offering unique method combining individual lessons with band instruction, jam sessions, Battles of the Bands, recording studios, and public concerts to cultivate musicianship |
514 | |||
| 27 |
First Home Mortgagefirsthome.com
A mortgage corporation offering home loan services in 21 states, with a focus on superior customer service and empowering employees for innovative ideas |
508 | |||
| 28 |
Carey Internationalcarey.com
Innovative global ground transportation solutions since 1921, offering chauffeured services, enterprise management, logistics, technology, and preferred partner programs across 1000+ cities worldwide |
504 | |||
| 29 |
Volo Sportsvolosports.com
A company based in Baltimore offering adults sports, fitness, social activities, and volunteer opportunities while supporting free youth sports programs nationwide |
495 | |||
| 30 |
MedStar Good Samaritan Hospitalmedstarhealth.org
A specialty healthcare provider offering a range of services including rehabilitation, orthopaedics, gynecology, pediatrics, emergency care, screenings, nursing, and senior living options |
482 | |||
| 31 |
IUEC - International Union of Elevator Constructorsiuec.org
The company represents over 27,000 skilled elevator constructors in the US and Canada, shaping skylines and keeping nations moving |
446 | |||
| 32 | 434 | ||||
| 33 |
MedStar St. Mary's Hospitalmedstarhealth.org
A 103-bed full-service community hospital in Maryland offering state-of-the-art emergency, inpatient, and outpatient care with a focus on excellence and compassionate medical care |
415 | |||
| 34 |
U.S. Consumer Product Safety Commissioncpsc.gov
An organization dedicated to protecting the public from risks of injury or death from consumer products through regulation and safety measures |
412 | |||
| 35 |
Merritt Clubsmerrittclubs.com
A Maryland-based fitness company focused on creating customized facilities and programs to support overall well-being and build a healthier community |
405 | |||
| 36 | 392 | ||||
| 37 |
Welldocwelldoc.com
The company offers BlueStar, an in-app digital assistant for type 2 diabetes to drive down costs and promote personal healthcare transformation |
391 | |||
| 38 | 
Travel Center Of Americatatravelcenters.com
A food & beverages company located in Baltimore, Maryland, specializing in offering services to travelers at their center |
370 | |||
| 39 |
Howard Bankfnb-online.com
The company values personal connections and outstanding service to help individuals and communities build dreams and legacies |
352 | |||
| 40 |
Atlas Restaurant Groupatlasrestaurantgroup.com
A national hospitality group with 34 restaurants across multiple states, focusing on authentic cuisine, impeccable service, and entertainment Employs over 2,000 people |
349 | |||
| 41 |
Shore United Bankshoreunitedbank.com
A full-service community bank with over a billion in assets, offering innovative financial services, digital banking, and trust management |
343 | |||
| 42 |
MTA Marylandmta.maryland.gov
State-operated agency providing Local Bus, Light Rail, Metro Subway, Commuter Bus, and Mobility paratransit services throughout the Baltimore-Washington region and statewide technical support. |
331 | |||
| 43 |
Vectorworksvectorworks.net
A global leader in design and BIM software for architecture, landscape, and entertainment industries, providing one-platform solutions for collaborative project lifecycle management |
322 | |||
| 44 |
Shoppers Supermarketshoppersfood.com
A full-service supermarket offering everyday low prices, quality meat, produce, deli items, seafood, and hot foods while supporting local communities |
314 | |||
| 45 |
NASA Federal Credit Unionnasafcu.com
Offers financial services and career opportunities, including competitive salaries, benefits, and professional development programs to its employees and members. |
303 | |||
| 46 |
Keany Produce & Gourmetkeanyproduce.com
A long-standing produce distributor with a commitment to quality, service, and sustainability, offering a wide range of products and services to customers in multiple states |
256 | |||
| 47 |
SemaConnectblinkcharging.com
The company specializes in providing complete EV charging solutions for commercial, multifamily residents, fleet, and property owners with reliable performance and industry-best uptime |
47 | |||
| 48 |
SkyPoint Federal Credit Unionskypointfcu.com
A premier financial institution offering a wide array of services in Maryland, Virginia, and DC, prioritizing member needs, financial integrity, and value |
37 | |||
| 49 |
Unit-e Technologiesunitetechno.com
Technology development studio specialized in arcade design, electronics fabrication, interactive games, and lighting solutions Notable products include videmption games, music games, and unique displays |
2 | |||
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.
More company lists in Maryland
- The largest companies in Maryland 1,688
- Multinational companies in Maryland 216
- IT Services and IT Consulting companies in Maryland 189
- IT services companies in Maryland 179
- Professional services firms in Maryland 176
- Education providers in Maryland 151
- Hospitals and Health Care companies in Maryland 114
- Consulting firms in Maryland 112
- Companies with in-house R&D in Maryland 107
- Healthcare providers in Maryland 105
- Critical infrastructure operators in Maryland 94
- Retail chains in Maryland 91
- Public sector organisations in Maryland 91
- Financial services firms in Maryland 88
- Aerospace and defence companies in Maryland 80
- Construction companies in Maryland 80
- Manufacturers in Maryland 75
- Financial Services companies in Maryland 65
- Government Administration companies in Maryland 61
- Higher Education companies in Maryland 54
- Hardware manufacturers in Maryland 53
- Research institutes in Maryland 52
- SaaS companies in Maryland 52
- AI companies in Maryland 48
The same list elsewhere in United States
- Companies with a mobile app in the United States 4,663
- Companies with a mobile app in California 827
- Companies with a mobile app in New York State 491
- Companies with a mobile app in Texas 366
- Companies with a mobile app in Florida 284
- Companies with a mobile app in Illinois 178
- Companies with a mobile app in Massachusetts 159
- Companies with a mobile app in Alabama 156
- Companies with a mobile app in Pennsylvania 130
- Companies with a mobile app in Washington State 128
- Companies with a mobile app in Georgia 117
- Companies with a mobile app in Ohio 114
- Companies with a mobile app in New Jersey 113
- Companies with a mobile app in Colorado 100
- Companies with a mobile app in North Carolina 96
- Companies with a mobile app in Michigan 95
- Companies with a mobile app in Virginia 93
- Companies with a mobile app in Arizona 87
- Companies with a mobile app in Minnesota 84
- Companies with a mobile app in Missouri 78
- Companies with a mobile app in Utah 78
- Companies with a mobile app in New York 371
- Companies with a mobile app in San Francisco 238
- Companies with a mobile app in Los Angeles 81