List of Companies Using Avaya
Prospecting companies using Avaya? Here they are, biggest first, including SYKES, Deloitte Consulting and Vattenfall. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$1B - $10B
16K
$1B - $10B
16K
$3.6B
$1B - $10B
16K
$1B - $10B
16K
$10B+
16K
$1B - $10B
16K
$1B - $10B
16K
$800M
$10B+
16K
$100M - $250M
15K
$1B - $10B
15K
$102M
$10B+
15K
$9M
$1B - $10B
15K
$24M
$500M - $1B
15K
$1.5B
$1B - $10B
15K
$10B+
15K
$1.8B
$10B+
15K
$10B+
15K
$1B - $10B
15K
$1B - $10B
15K
$3.9B
$10B+
15K
$3.3B
$10B+
15K
$10B+
15K
$1B - $10B
15K
$10B+
15K
$5.4B
$500M - $1B
15K
$1B - $10B
15K
$1B - $10B
15K
$500M - $1B
15K
$1B - $10B
15K
$10B+
15K
$1B - $10B
15K
$100M - $250M
15K
$7.4B
$10B+
15K
$2.5B
$10B+
15K
$1B - $10B
15K
$1B - $10B
15K
$1B - $10B
15K
$4.9B
$1B - $10B
15K
$9.5M
$1B - $10B
15K
$32M
$500M - $1B
15K
$1B - $10B
15K
$1.5B
$1B - $10B
14K
$500M - $1B
14K
$1.4B
$10B+
14K
$10B+
14K
$1B - $10B
14K
$1B - $10B
14K
$1B - $10B
14K
$1B - $10B
14K
$1.3B
$500M - $1B
14K
$1B - $10B
14K
$839K
$100M - $250M
14K
$1B - $10B
14K
$126M
$1B - $10B
14K
$1B - $10B
14K
$250M - $500M
14K
$1B - $10B
14K
$1B - $10B
14K
$1B - $10B
14K
$280M
$1B - $10B
14K
$10B+
14K
$1B - $10B
14K
$10B+
14K
$1B - $10B
14K
$745M
$1B - $10B
14K
$1B - $10B
14K
$10B+
13K
$7.6B
$10B+
13K
$10B+
13K
$10B+
13K
$500M - $1B
13K
$77M
$1B - $10B
13K
$1B - $10B
13K
$25M - $50M
13K
$10B+
13K
$5.7M
$1B - $10B
13K
$500M - $1B
13K
$1.5B
$1B - $10B
13K
$500M - $1B
13K
$1B - $10B
13K
$1.4B
$250M - $500M
13K
$10B+
13K
$1B - $10B
13K
$10B+
13K
$1B - $10B
13K
$3.8B
$1B - $10B
13K
$4.3M
$1B - $10B
13K
$550M
$10B+
13K
$10B+
13K
$200M
$1B - $10B
13K
$10B+
13K
$10B+
13K
$10M - $25M
12K
$1.2B
$10B+
12K
$2.4B
$1B - $10B
12K
$735M
$1B - $10B
12K
$10B+
12K
$1B - $10B
12K
$500M - $1B
12K
$1.4B
$10B+
12K
About companies using Avaya
Why target companies using Avaya?
Avaya is a Customer support & communications technology. Companies running these tools operate help desks, live chat and phone or video platforms, which makes them buyers of customer experience, telephony and support tooling. Companies on the list include SYKES, Deloitte Consulting and Vattenfall.
Which industries use Avaya the most?
Among companies using Avaya on LeadIQ, the most common industries are IT Services and IT Consulting, Hospitals and Health Care, Financial Services, Software Development, Hospitality and Insurance. Narrow your list to the industry you sell into from there.
Where are companies using Avaya located?
Companies using Avaya are most often headquartered in the United States, the United Kingdom, Canada, France, Australia and Germany.
What other Customer support & communications technologies do companies use?
Prospecting the wider Customer support & communications space? Related technologies with their own company lists include Zendesk, Zoom, ServiceNow and WhatsApp Business.
How do I reach decision makers at companies using Avaya?
Open a company to see its employee directory and email format, then use LeadIQ to get verified work emails and phone numbers for the people you want to reach and push them straight to your CRM or sequencer.
Insights based on LeadIQ data refreshed in September 2026.
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Top companies by employee count
Top companies in United States by employee countTop companies in United Kingdom by employee countTop companies in Canada by employee countTop companies in Germany by employee countTop companies in France by employee countTop companies in Australia by employee countTop companies in Netherlands by employee countTop companies in India by employee countTop companies in Spain by employee countTop companies in Switzerland by employee countTop companies in Sweden by employee countTop companies in Italy by employee countTop companies in Denmark by employee countTop companies in Brazil by employee countTop companies in Ireland by employee count
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