Report on First International Summer School on Flow Cytometry, The University of Valencia, Valencia, Spain. 8-20 July, 2013. Organized by European Society for Clinical Cell Analysis. (ESCCA). At the outset I express my deep sense of gratitude to Dr.Claude Lambert, Universite de Saint-Etienne, France. For taking the initiative to conduct this first International Summer School on Flow Cytometry at The University of Valencia, Valencia, Spain. I am also thankful for Prof.Jose-Enrique O’Connor who had sent me an invitation as Special Guest to the University of Valencia and allowed me to participate in the august summer school on flow cytometry. I express my very special thanks to Prof.Jose-Enrique O’Connor who has taken strong initiative to pursue my Visa Application processing with the Visa Officer at the Consulate General of Spain, Mumbai, India. Had he not taken such pressing steps it should not have been possible for me to attend this august workshop conducted by ESCCA. I have no words to express my wholehearted gratitude to Prof.Jose-Enrique for the magnanimous wavering of my registration fee. The workshop started on Monday, 8th July, 2013 from 13:00hrs with registration of the participants, who had come from different parts of the world covering continents of Europe, Asia and North America. The First session of the workshop was covering the courses of 1).Basic Flow Cytometry and a parallel advanced course on 2).Functional Cytomics in Clinical and Translational Research. Both of these courses concluded on Saturday, 13th July, 2013. And subsequently there was a Second session of the workshop which started with a fresh batch of participants with registration to this new courses starting on Monday, 15th July, 2013. And the courses covering in this Second session of the workshop were 1).Clinical and Translational Applications of Cytometry and a parallel workshop on 2).Advanced Applications of Cytometry in Hematology. Both these courses were concluded on Saturday, 20th July, 2013. On a whole the overall participants for these courses were 43 candidates.