Company lists · Data refreshed November 2026
All Tier 1 IT companies lists
Every Tier 1 IT companies list RevenueBase publishes, by country and city. 856 lists covering 275,276 companies, verified November 2026. Largest markets first.
Tier 1 IT companies by location
- Tier 1 IT companies based in Reading, United Kingdom73
- Tier 1 IT companies based in Cali, Colombia72
- Tier 1 IT companies based in Cumming, United States72
- Tier 1 IT companies based in Dhaka, Bangladesh, Bangladesh72
- Tier 1 IT companies based in Seoul, South Korea72
- Tier 1 IT companies based in Vienna, United States72
- Tier 1 IT companies based in Atasehir, Türkiye71
- Tier 1 IT companies based in Fort Worth, United States71
- Tier 1 IT companies based in Sunnyvale, United States71
- Tier 1 IT companies based in Tel Aviv, Israel71
- Tier 1 IT companies based in Winnipeg, Canada71
- Tier 1 IT companies based in Cleveland, United States70
- Tier 1 IT companies based in Dublin, United States70
- Tier 1 IT companies based in Joinville, Brazil70
- Tier 1 IT companies based in Nottingham, United Kingdom70
- Tier 1 IT companies based in Novi Sad, Serbia70
- Tier 1 IT companies based in Randburg, South Africa70
- Tier 1 IT companies based in Calicut, India69
- Tier 1 IT companies based in Jersey City, United States69
- Tier 1 IT companies based in Maputo, Mozambique69
- Tier 1 IT companies based in Rotterdam, Netherlands69
- Tier 1 IT companies based in Guarulhos, Brazil68
- Tier 1 IT companies based in Guayaquil, Ecuador68
- Tier 1 IT companies based in Jamaica68
- Tier 1 IT companies based in Louisville, United States68
- Tier 1 IT companies based in Rosario, Argentina68
- Tier 1 IT companies based in Sterling, United States68
- Tier 1 IT companies based in Afghanistan67
- Tier 1 IT companies based in Douala, Cameroon67
- Tier 1 IT companies based in Secunderabad, India67
- Tier 1 IT companies based in Canberra, Australia66
- Tier 1 IT companies based in Izmir, Türkiye66
- Tier 1 IT companies based in Sorocaba, Brazil66
- Tier 1 IT companies based in Thiruvananthapuram, India66
- Tier 1 IT companies based in Trinidad And Tobago66
- Tier 1 IT companies based in Uberlandia, Brazil66
- Tier 1 IT companies based in Boca Raton, United States65
- Tier 1 IT companies based in Bologna, Italy65
- Tier 1 IT companies based in Cambodia65
- Tier 1 IT companies based in Cankaya, Türkiye65
- Tier 1 IT companies based in San Isidro, Peru65
- Tier 1 IT companies based in Sao Jose Dos Campos, Brazil65
- Tier 1 IT companies based in Tirana, Albania65
- Tier 1 IT companies based in Udaipur, India65
- Tier 1 IT companies based in Jundiai, Brazil64
- Tier 1 IT companies based in Richardson, United States64
- Tier 1 IT companies based in Rochester, United States64
- Tier 1 IT companies based in Lalitpur, Nepal63
- Tier 1 IT companies based in Oklahoma City, United States63
- Tier 1 IT companies based in Omaha, United States63
- Tier 1 IT companies based in Skopje, North Macedonia63
- Tier 1 IT companies based in Tokyo, Japan63
- Tier 1 IT companies based in Aurangabad, India62
- Tier 1 IT companies based in Blumenau, Brazil62
- Tier 1 IT companies based in Colorado Springs, United States62
- Tier 1 IT companies based in Edinburgh, United Kingdom62
- Tier 1 IT companies based in Honduras62
- Tier 1 IT companies based in Sheffield, United Kingdom62
- Tier 1 IT companies based in Burkina Faso61
- Tier 1 IT companies based in Ludhiana, India61
- Tier 1 IT companies based in Ranchi, India61
- Tier 1 IT companies based in Wellington, New Zealand61
- Tier 1 IT companies based in Jakarta Selatan, Indonesia60
- Tier 1 IT companies based in Ljubljana, Slovenia60
- Tier 1 IT companies based in Luxembourg, Luxembourg60
- Tier 1 IT companies based in Makati City, Philippines60
- Tier 1 IT companies based in Malaga, Spain60
- Tier 1 IT companies based in Oakville, Canada60
- Tier 1 IT companies based in Sugar Land, United States60
- Tier 1 IT companies based in Gujrat, India59
- Tier 1 IT companies based in Hanover, Germany59
- Tier 1 IT companies based in Madagascar59
- Tier 1 IT companies based in Porto, Portugal59
- Tier 1 IT companies based in Gaborone, Botswana58
- Tier 1 IT companies based in Madison, United States58
- Tier 1 IT companies based in Nuremberg, Germany58
- Tier 1 IT companies based in Salt Lake City, United States58
- Tier 1 IT companies based in Surrey, Canada58
- Tier 1 IT companies based in Utrecht, Netherlands58
- Tier 1 IT companies based in Albuquerque, United States57
- Tier 1 IT companies based in Aurora, United States57
- Tier 1 IT companies based in Bursa, Türkiye57
- Tier 1 IT companies based in Cary, United States57
- Tier 1 IT companies based in Cheyenne, United States57
- Tier 1 IT companies based in Gaithersburg, United States57
- Tier 1 IT companies based in Grand Rapids, United States57
- Tier 1 IT companies based in Guatemala, Guatemala57
- Tier 1 IT companies based in Jakarta Pusat, Indonesia57
- Tier 1 IT companies based in Manaus, Brazil57
- Tier 1 IT companies based in Miraflores, Peru57
- Tier 1 IT companies based in Sisli, Türkiye57
- Tier 1 IT companies based in Gdansk, Poland56
- Tier 1 IT companies based in London, Canada56
- Tier 1 IT companies based in Nicosia, Cyprus56
- Tier 1 IT companies based in Pleasanton, United States56
- Tier 1 IT companies based in Antwerp, Belgium55
- Tier 1 IT companies based in Florence, Italy55
- Tier 1 IT companies based in Greenville, United States55
- Tier 1 IT companies based in New Cairo, Egypt55
- Tier 1 IT companies based in Zapopan, Mexico55
- Tier 1 IT companies based in Detroit, United States54
- Tier 1 IT companies based in Lewes, United States54
- Tier 1 IT companies based in Limassol, Cyprus54
- Tier 1 IT companies based in Namibia54
- Tier 1 IT companies based in Queretaro, Mexico54
- Tier 1 IT companies based in Vitoria, Brazil54
- Tier 1 IT companies based in Geneva, Switzerland53
- Tier 1 IT companies based in Ha Noi, Vietnam53
- Tier 1 IT companies based in Kozhikode, India53
- Tier 1 IT companies based in Leipzig, Germany53
- Tier 1 IT companies based in Round Rock, United States53
- Tier 1 IT companies based in Sarajevo, Bosnia and Herzegovina53
- Tier 1 IT companies based in Tucson, United States53
- Tier 1 IT companies based in Birmingham, United States52
- Tier 1 IT companies based in Dresden, Germany52
- Tier 1 IT companies based in Duluth, United States52
- Tier 1 IT companies based in Malawi52
- Tier 1 IT companies based in Marseille, France52
- Tier 1 IT companies based in Osasco, Brazil52
- Tier 1 IT companies based in San Pedro Garza Garcia, Mexico52
- Tier 1 IT companies based in Sao Caetano Do Sul, Brazil52
- Tier 1 IT companies based in Barranquilla, Colombia51
- Tier 1 IT companies based in Farmington Hills, United States51
- Tier 1 IT companies based in Kansas City, United States51
- Tier 1 IT companies based in Leesburg, United States51
- Tier 1 IT companies based in Malmo, Sweden51
- Tier 1 IT companies based in Shanghai, China51
- Tier 1 IT companies based in The Hague, Netherlands51
- Tier 1 IT companies based in Baghdad, Iraq50
- Tier 1 IT companies based in Campo Grande, Brazil50
- Tier 1 IT companies based in Lexington, United States50
- Tier 1 IT companies based in Lodz, Poland50
- Tier 1 IT companies based in Asuncion, Paraguay49
- Tier 1 IT companies based in Bethesda, United States49
- Tier 1 IT companies based in Bogota Dc, Colombia49
- Tier 1 IT companies based in Cambridge, United Kingdom49
- Tier 1 IT companies based in Genoa, Italy49
- Tier 1 IT companies based in Brooklyn, United States48
- Tier 1 IT companies based in City Of Tshwane, South Africa48
- Tier 1 IT companies based in Marietta, United States48
- Tier 1 IT companies based in Milwaukee, United States48
- Tier 1 IT companies based in Sahibzada Ajit Singh Nagar, India48
- Tier 1 IT companies based in Santiago De Surco, Peru48
- Tier 1 IT companies based in Caxias Do Sul, Brazil47
- Tier 1 IT companies based in Coventry, United Kingdom47
- Tier 1 IT companies based in Hong, Hong Kong47
- Tier 1 IT companies based in Middletown, United States47
- Tier 1 IT companies based in Nantes, France47
- Tier 1 IT companies based in North Sydney, Australia47
- Tier 1 IT companies based in Redmond, United States47
- Tier 1 IT companies based in Slough, United Kingdom47
- Tier 1 IT companies based in Tripoli, Libya47
- Tier 1 IT companies based in Bonn, Germany46
- Tier 1 IT companies based in Dayton, United States46
- Tier 1 IT companies based in Iasi, Romania46
- Tier 1 IT companies based in Memphis, United States46
- Tier 1 IT companies based in Richmond Hill, Canada46
- Tier 1 IT companies based in Silver Spring, United States46
- Tier 1 IT companies based in Tulsa, United States46
- Tier 1 IT companies based in Vancouver, United States46
- Tier 1 IT companies based in Bordeaux, France45
- Tier 1 IT companies based in Bremen, Germany45
- Tier 1 IT companies based in Burnaby, Canada45
- Tier 1 IT companies based in Cardiff, United Kingdom45
- Tier 1 IT companies based in Chandler, United States45
- Tier 1 IT companies based in Deira, United Arab Emirates45
- Tier 1 IT companies based in Eindhoven, Netherlands45
- Tier 1 IT companies based in Kuala, Malaysia45
- Tier 1 IT companies based in Liverpool, United Kingdom45
- Tier 1 IT companies based in Panchkula, India45
- Tier 1 IT companies based in Shah Alam, Malaysia45
- Tier 1 IT companies based in Tallahassee, United States45
- Tier 1 IT companies based in Zaragoza, Spain45
- Tier 1 IT companies based in Albany, United States44
- Tier 1 IT companies based in Dammam, Saudi Arabia44
- Tier 1 IT companies based in Durham, United States44
- Tier 1 IT companies based in Franklin, United States44
- Tier 1 IT companies based in Glendale, United States44
- Tier 1 IT companies based in Laval, Canada44
- Tier 1 IT companies based in Mysore, India44
- Tier 1 IT companies based in Padua, Italy44
- Tier 1 IT companies based in Parsippany, United States44
- Tier 1 IT companies based in San Ramon, United States44
- Tier 1 IT companies based in Sao Jose Do Rio Preto, Brazil44
- Tier 1 IT companies based in Somerset, United States44
- Tier 1 IT companies based in Suwanee, United States44
- Tier 1 IT companies based in Zirakpur, India44
- Tier 1 IT companies based in Christchurch, New Zealand43
- Tier 1 IT companies based in Knoxville, United States43
- Tier 1 IT companies based in Montenegro43
- Tier 1 IT companies based in Puducherry, India43
- Tier 1 IT companies based in Roswell, United States43
- Tier 1 IT companies based in San Jose, Costa Rica43
- Tier 1 IT companies based in Waterloo, Canada43
- Tier 1 IT companies based in West Palm Beach, United States43
- Tier 1 IT companies based in Yangon, Myanmar43
- Tier 1 IT companies based in Leicester, United Kingdom42
- Tier 1 IT companies based in Manassas, United States42
- Tier 1 IT companies based in Mannheim, Germany42
- Tier 1 IT companies based in Maringa, Brazil42
Counts are matching companies in the RevenueBase company graph as of each list's last refresh date.