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 Pretoria, South Africa178
- Tier 1 IT companies based in Vienna, Austria177
- Tier 1 IT companies based in Belgrade, Serbia175
- Tier 1 IT companies based in San Jose, United States175
- Tier 1 IT companies based in Turin, Italy173
- Tier 1 IT companies based in Caracas, Venezuela171
- Tier 1 IT companies based in Perth, Australia171
- Tier 1 IT companies based in Las Vegas, United States169
- Tier 1 IT companies based in Birmingham, United Kingdom168
- Tier 1 IT companies based in Luxembourg166
- Tier 1 IT companies based in Boston, United States165
- Tier 1 IT companies based in Denver, United States165
- Tier 1 IT companies based in Lagos State, Nigeria165
- Tier 1 IT companies based in Tunis, Tunisia165
- Tier 1 IT companies based in Angola164
- Tier 1 IT companies based in Armenia164
- Tier 1 IT companies based in Doha, Qatar164
- Tier 1 IT companies based in Kampala, Uganda164
- Tier 1 IT companies based in Herndon, United States162
- Tier 1 IT companies based in Petaling Jaya, Malaysia162
- Tier 1 IT companies based in Bahrain160
- Tier 1 IT companies based in Iraq160
- Tier 1 IT companies based in Medellin, Colombia160
- Tier 1 IT companies based in Lithuania159
- Tier 1 IT companies based in Manila, Philippines159
- Tier 1 IT companies based in Quito, Ecuador159
- Tier 1 IT companies based in Barueri, Brazil158
- Tier 1 IT companies based in Monterrey, Mexico158
- Tier 1 IT companies based in Thane, India158
- Tier 1 IT companies based in Zagreb, Croatia155
- Tier 1 IT companies based in Bratislava, Slovakia154
- Tier 1 IT companies based in San Antonio, United States154
- Tier 1 IT companies based in South Korea153
- Tier 1 IT companies based in Athens, Greece150
- Tier 1 IT companies based in Campinas, Brazil150
- Tier 1 IT companies based in Montevideo, Uruguay150
- Tier 1 IT companies based in Oslo, Norway149
- Tier 1 IT companies based in Kuwait147
- Tier 1 IT companies based in Bosnia and Herzegovina146
- Tier 1 IT companies based in Dar Es Salaam, Tanzania142
- Tier 1 IT companies based in Fremont, United States142
- Tier 1 IT companies based in Nashik, India142
- Tier 1 IT companies based in Slovenia141
- Tier 1 IT companies based in Kazakhstan140
- Tier 1 IT companies based in Lyon, France140
- Tier 1 IT companies based in Dakar, Senegal139
- Tier 1 IT companies based in Harare, Zimbabwe139
- Tier 1 IT companies based in Recife, Brazil139
- Tier 1 IT companies based in Tallinn, Estonia139
- Tier 1 IT companies based in Albania138
- Tier 1 IT companies based in Edmonton, Canada138
- Tier 1 IT companies based in Panama138
- Tier 1 IT companies based in Adelaide, Australia137
- Tier 1 IT companies based in Frankfurt, Germany136
- Tier 1 IT companies based in Princeton, United States136
- Tier 1 IT companies based in Patna, India135
- Tier 1 IT companies based in Amsterdam, Netherlands133
- Tier 1 IT companies based in Columbus, United States133
- Tier 1 IT companies based in Dublin, Ireland133
- Tier 1 IT companies based in Dr Congo132
- Tier 1 IT companies based in Arlington, United States131
- Tier 1 IT companies based in Addis Ababa, Ethiopia130
- Tier 1 IT companies based in Faridabad, India130
- Tier 1 IT companies based in Dover, United States129
- Tier 1 IT companies based in Guatemala129
- Tier 1 IT companies based in Luanda, Angola128
- Tier 1 IT companies based in Ikeja, Nigeria127
- Tier 1 IT companies based in Yerevan, Armenia126
- Tier 1 IT companies based in Fairfax, United States125
- Tier 1 IT companies based in Reston, United States125
- Tier 1 IT companies based in Georgia124
- Tier 1 IT companies based in Ashburn, United States123
- Tier 1 IT companies based in Newark, United States123
- Tier 1 IT companies based in Jakarta Selatan Dki Jakarta, Indonesia122
- Tier 1 IT companies based in Latvia122
- Tier 1 IT companies based in Abuja, Nigeria121
- Tier 1 IT companies based in Indianapolis, United States121
- Tier 1 IT companies based in Cologne, Germany120
- Tier 1 IT companies based in Edison, United States120
- Tier 1 IT companies based in Mauritius120
- Tier 1 IT companies based in Minneapolis, United States120
- Tier 1 IT companies based in Taiwan116
- Tier 1 IT companies based in Columbia, United States114
- Tier 1 IT companies based in Madurai, India114
- Tier 1 IT companies based in St. Louis, United States114
- Tier 1 IT companies based in Faisalabad, Pakistan112
- Tier 1 IT companies based in Mozambique111
- Tier 1 IT companies based in Muscat, Oman111
- Tier 1 IT companies based in Bristol, United Kingdom110
- Tier 1 IT companies based in Brussels, Belgium109
- Tier 1 IT companies based in Sacramento, United States109
- Tier 1 IT companies based in Chantilly, United States108
- Tier 1 IT companies based in Sandton, South Africa108
- Tier 1 IT companies based in Hanoi, Vietnam107
- Tier 1 IT companies based in Portland, United States107
- Tier 1 IT companies based in Tbilisi, Georgia107
- Tier 1 IT companies based in Fortaleza, Brazil106
- Tier 1 IT companies based in Goiania, Brazil106
- Tier 1 IT companies based in Leeds, United Kingdom106
- Tier 1 IT companies based in Ernakulam, India105
- Tier 1 IT companies based in Salvador, Brazil105
- Tier 1 IT companies based in North Macedonia104
- Tier 1 IT companies based in Pittsburgh, United States104
- Tier 1 IT companies based in Sharjah, United Arab Emirates104
- Tier 1 IT companies based in Dusseldorf, Germany103
- Tier 1 IT companies based in Richmond, United States103
- Tier 1 IT companies based in Uzbekistan103
- Tier 1 IT companies based in Vilnius, Lithuania103
- Tier 1 IT companies based in Zambia103
- Tier 1 IT companies based in Bolivia102
- Tier 1 IT companies based in Cordoba, Argentina102
- Tier 1 IT companies based in Santa Clara, United States102
- Tier 1 IT companies based in Visakhapatnam, India102
- Tier 1 IT companies based in Zurich, Switzerland101
- Tier 1 IT companies based in Jacksonville, United States100
- Tier 1 IT companies based in Paraguay100
- Tier 1 IT companies based in Philadelphia, United States100
- Tier 1 IT companies based in Quebec, Canada100
- Tier 1 IT companies based in Rabat, Morocco100
- Tier 1 IT companies based in Wroclaw, Poland100
- Tier 1 IT companies based in Baku, Azerbaijan99
- Tier 1 IT companies based in El Salvador99
- Tier 1 IT companies based in Mexico, Mexico99
- Tier 1 IT companies based in Riga, Latvia99
- Tier 1 IT companies based in Jeddah, Saudi Arabia98
- Tier 1 IT companies based in Krakow, Poland98
- Tier 1 IT companies based in Helsinki, Finland97
- Tier 1 IT companies based in Moldova96
- Tier 1 IT companies based in Providencia, Chile96
- Tier 1 IT companies based in Puerto Rico96
- Tier 1 IT companies based in Alexandria, United States95
- Tier 1 IT companies based in Hong Kong, Hong Kong95
- Tier 1 IT companies based in Nasr City, Egypt95
- Tier 1 IT companies based in Brampton, Canada94
- Tier 1 IT companies based in Myanmar94
- Tier 1 IT companies based in Glasgow, United Kingdom93
- Tier 1 IT companies based in Las Condes, Chile93
- Tier 1 IT companies based in Valencia, Spain93
- Tier 1 IT companies based in Baltimore, United States92
- Tier 1 IT companies based in Beirut, Lebanon92
- Tier 1 IT companies based in Belarus92
- Tier 1 IT companies based in Gothenburg, Sweden92
- Tier 1 IT companies based in Guadalajara, Mexico91
- Tier 1 IT companies based in Naperville, United States91
- Tier 1 IT companies based in Raleigh, United States91
- Tier 1 IT companies based in Santo Domingo, Dominican Republic90
- Tier 1 IT companies based in Centurion, South Africa89
- Tier 1 IT companies based in Malta89
- Tier 1 IT companies based in Scottsdale, United States89
- Tier 1 IT companies based in Durban, South Africa88
- Tier 1 IT companies based in Libya88
- Tier 1 IT companies based in Alexandria, Egypt87
- Tier 1 IT companies based in Ribeirao Preto, Brazil87
- Tier 1 IT companies based in Schaumburg, United States87
- Tier 1 IT companies based in Abidjan, Côte D'Ivoire86
- Tier 1 IT companies based in Springfield, United States86
- Tier 1 IT companies based in Stuttgart, Germany86
- Tier 1 IT companies based in Bellevue, United States85
- Tier 1 IT companies based in Midrand, South Africa85
- Tier 1 IT companies based in Almaty, Kazakhstan84
- Tier 1 IT companies based in Cincinnati, United States84
- Tier 1 IT companies based in Dehradun, India84
- Tier 1 IT companies based in Markham, Canada84
- Tier 1 IT companies based in Giza, Egypt83
- Tier 1 IT companies based in Panama, Panama83
- Tier 1 IT companies based in Sao Bernardo Do Campo, Brazil82
- Tier 1 IT companies based in Troy, United States82
- Tier 1 IT companies based in Botswana81
- Tier 1 IT companies based in Florianopolis, Brazil81
- Tier 1 IT companies based in Poznan, Poland81
- Tier 1 IT companies based in Minsk, Belarus80
- Tier 1 IT companies based in Overland Park, United States80
- Tier 1 IT companies based in Seville, Spain80
- Tier 1 IT companies based in St. Petersburg, United States80
- Tier 1 IT companies based in Toulouse, France80
- Tier 1 IT companies based in Iselin, United States79
- Tier 1 IT companies based in Mckinney, United States79
- Tier 1 IT companies based in Mclean, United States79
- Tier 1 IT companies based in Tashkent, Uzbekistan79
- Tier 1 IT companies based in Lusaka, Zambia78
- Tier 1 IT companies based in Nashville, United States78
- Tier 1 IT companies based in Fort Lauderdale, United States77
- Tier 1 IT companies based in Santo Andre, Brazil77
- Tier 1 IT companies based in Ahmadabad, India76
- Tier 1 IT companies based in Makkah, Saudi Arabia76
- Tier 1 IT companies based in Cluj-Napoca, Romania75
- Tier 1 IT companies based in Gandhinagar, India75
- Tier 1 IT companies based in Manama, Bahrain75
- Tier 1 IT companies based in Naples, Italy75
- Tier 1 IT companies based in Rockville, United States75
- Tier 1 IT companies based in Chisinau, Moldova74
- Tier 1 IT companies based in Milton Keynes, United Kingdom74
- Tier 1 IT companies based in Providencia Santiago, Chile74
- Tier 1 IT companies based in Bengaluru East, India73
- Tier 1 IT companies based in Copenhagen, Denmark73
- Tier 1 IT companies based in Cyberjaya, Malaysia73
- Tier 1 IT companies based in Kanpur, India73
- Tier 1 IT companies based in Katy, United States73
- Tier 1 IT companies based in Palestine73
- Tier 1 IT companies based in Piscataway, United States73
Counts are matching companies in the RevenueBase company graph as of each list's last refresh date.