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
LeapXpert
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
Limbik - now part of PR group Burson
LimeSurvey
Liminal
Link Consumer Strategies
Lionfish Tech Advisors
Listen Labs - to be acquired by Salesforce Sept '26
Listen+Learn (now called Unwritten)
LiteScribe
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 - part of Salesforce from Oct '26
Loris AI (acquired by Contentsquare Oct 2025)
Lovebrands
Loyal Guru
Loyalty Research
LRW (now Material+)
LT Befragung und Analyse
Lucky Orange
Lumanity
LumApps
Luma
Lumen Research
Lumenore
Luminoso (now Cemantica May 2026)
Lumivero
Lumoa - now part of Netigate
Lurkit
Luth Research
Lux Research
Lynx
Lytics (now part of Contentstack)