Here is a list of conferences and summer schools that I enjoyed going to or would like to go to at some point, and are mostly based in Europe. I will be updating this page every now and then.
Large Mixed Topic Conferences
European Meetings of the Econometric Society
European Economic Association (EEA) Annual Congress
Royal Economic Society (RES) Annual Conference
Spring Meeting of Young Economists
SED Annual Meeting
KT-päivät (Annual Meeting of the Finnish Economic Association)
CRETE (Annual Conference on Research in Economic Theory and Econometrics based in Greece)
Labour Economics Conferences
European Association of Labour Economists (EALE)
Search and Matching Conference
The Society of Labor Economists Annual Meetings
European Society for Population Economics (ESPE)
Nordic Summer Institute in Labour Economics
Gender Conferences
COSME Gender Economics Workshop
GRAPE Gender Conference
PhD conferences:
RGS Doctoral Meetings
Spring Meeting of Young Economists
IAB Perspectives on (Un)-Employment Workshop
Summer Schools
ISEO Summer School (ideal for Master's students)
Labour Summer School in Barcelona (ideal for PhDs)
IZA Summer School in Labour Economics (ideal for finishing PhDs)
Advanced Courses in Economics, Studienzentrum Gerzensee (ideal for PhDs and theorists)
CEMFI Summer School in Madrid
Econometrics Advanced Summer School (ASSEE) in Rethymnon (ideal for PhDs)