Some conferences I attend:

Higher Dimensional Algebraic Geometry, Holomorphic Dynamics and Their Interactions, Singapore, January 3-20, 2017
Moduli spaces of sheaves and related topics, RIMS, Kyoto, Japan, February 1-3, 2017
Algebraic and Arithmetic Geometry Conference, Hefei, China, May 8-12, 2017
Higgs bundles and related topics, Nice, France, May 29-June 2, 2017
Higher Dimensional Algebraic Geometry, Taipei, Taiwan, June 19-23, 2017
Algebraic K-theory and Arithmetic, Bedlewo, Poland, August 20-26, 2017
Periods and Ricci flat manifolds, Warsaw, Poland, September 11-15, 2017
8 Forum Matematykow Polskich, Lublin, Poland, September 18-22, 2017
Arithmetic and Analysis, Munster, Germany, April 9-13, 2018

Past conferences:

Arithmetic, Motives and Moduli spaces, Paris, France, January 9-13, 2012
CMI-IMSc Mathematics Colloquium, Chennai, India, January 23-27, 2012
Char-p and p-adic geometry, Mainz, Germany, June 4-8, 2012
Algebraic and Arithmetic Geometry, Krakow, Poland, 28 June - 1 July, 2012
Komplexe Analysis, Oberwolfach, Germany, September 2-8, 2012
The Topology of Algebraic Varieties, Montreal, Canada, September 21-28, 2012
Arithmetic Algebraic Geometry, Berlin, Germany, June 10-14, 2013
Fundamental Groups in Arithmetic and Algebraic Geometry, Pisa, Italy, December 16-20, 2013
Geometry and Arithmetic of Surfaces, Munich, Germany, March 17-21, 2014
Spring school on the fundamental group scheme and related topics, Nice, France, May 5-7, 2014
DMV-PTM meeting, Poznan, Poland, September 17-20, 2014
Complex manifolds, dynamics and birational geometry, Moscow, Russia, November 10-14, 2014
Algebraic Geometry "IMPANGA 2015", Bedlewo, Poland, April 12-18, 2015
AMS Algebraic Geometry Summer Institute, Salt Lake City, USA, July 13-31, 2015
6 Forum Matematykow Polskich, Warsaw, Poland, September 7-12, 2015
Moduli spaces in geometry, Marseille, France, October 26-30, 2015
Arithmetic and Algebraic Geometry, Tokyo, Japan, January 25-28, 2016
Generalizations of A^1-Homotopy Invariance in Algebraic Geometry and Homotopy Theory, Zinnowitz/Usedom, Germany, April 3-8, 2016
Spring School on Moduli Theory, Fudan University, Shanghai, China, April 18-23, 2016
Positivity and Vanishing Theorems, Lille, France, June 6-10, 2016
Higher Dimensional Algebraic Geometry, Salt Lake City, USA, July 18-26, 2016
Higher dimensional algebraic geometry and characteristic p, Marseille, France, September 12-16, 2016
Differential forms in algebraic geometry, Freiburg, Germany, September 19-23, 2016
School on Higgs bundles and Fundamental Groups of Algebraic Varieties, Essen, Germany, September 27-30, 2016

Recently coorganized conferences:

Workshop on modular curves, Banach Center, Warsaw, December 17-19, 2012
Arithmetic Geometry, Banach Center, Warsaw, July 15-19, 2013
Triangulated Categories in Algebra, Geometry and Topology , Banach Center, Warsaw, 15-18 June, 2014
Algebraic Geometry School: Topics in characteristic p>0 and p-adic geometry, Lukecin, Poland, September 7-13, 2014
Thematic Session: Arithmetic Geometry, DMV-PTM meeting, Poznan, Poland, September 17-20, 2014
Algebraic Geometry, Warsaw 1960 - 2015, mini-conference to celebrate honorary doctorate of A. S. Bialynicki-Birula, Warsaw, Poland, March 19-20, 2015
Workshop on Higgs bundles and their relation to the Langlands program, Warsaw, Poland, October 8-9, 2015