Companies beginning with L:
L&E Research
LABEL Research & Consulting
LabX Media Group
Ladd Research Group (now Innovera Solutions)
Lakamo Recruiting Co.
Lake Market Research
Lamberts Consulting
Landell Mills International
Landor & Fitch - part of WPP
Language Insight
Larta Institute
Latana
later.com
Lattice
Launchmetrics
Launchpad Research (no logo showing)
Lava IP International Pte Ltd
Lawes Consulting
LDA Research
Leadfeeder - merged with Echobot, now part of Dealfront but still has own web site
Leading Edge
Leadspace
Leadsrx
LeapVision
Left Brain Marketing
Leger
Lemnisk / Immensitas Pte Ltd
lemonlime research
Lengow
Let's Talk Fresh
Lewers
Lexalytics
Leximancer
Lightdash
LiiV Group
Lillii - rebranded within freeingreturns.com
LimeSurvey
Liminal
Link Consumer Strategies
Lionfish Tech Advisors
Listen Labs
Listen+Learn (now called Unwritten)
Litmus - part of Validity since April '25
Liveminds
Livepanel
LiveRamp (acquired by Publicis May 2026)
LJE Research
LM Research & Marketing Consultancy
Locala
LocalExpress
Localytics
Logica Research
Logit Group
LogRocket
London Economics
Lonergan Research
Lookback
Loop11
Looper Insights
LoopMe
Loops.ai
Loris AI (acquired by Contentsquare Oct 2025)
Lovebrands
Loyal Guru
Loyalty Research
LRW (now Material+)
LT Befragung und Analyse
Lucky Orange
Lumanity
LumApps
Lumen Research
Lumenore
Luminoso (now Cemantica May 2026)
Lumoa - now part of Netigate
Lurkit
Luth Research
Lux Research
Lynx
Lytics (now part of Contentstack)