[MCSQ]: The Multilingual Corpus of Survey Questionnaires is the first publicly available corpus of questions’ texts. It includes questionnaires from European Social Survey (ESS), European Values Study (EVS) survey and The Survey of Health, Aging and Retirement in Europe (SHARE). Since its first release (Ada Lovelace) in June 2020 the corpus grew consistently, culminating in 263 distinct questionnaires, approximately 657.000 sentences and more than 3.5 million words in current version 2.0 (Mileva Marić-Einstein). Version 3 adds questionnaires from the WageIndicator Survey to the database. [MCSQ]: includes source sentences in British English and their translations into Catalan, Czech, French, German, Norwegian, Portuguese, Spanish and Russian, adding to 30 language varieties (e.g. French from Switzerland). * * MCSQ follows three standards: data is UTF-8 encoded, language codes follow the ISO 639- 2/B three-digit standard and country codes follow the ISO 3166 Alpha-2 two digit standard.