UbiComp 2019, September 11 to 13, London, UK 
The ACM International Joint Conference on Pervasive and Ubiquitous Computing will feature workshops on Ubiquitous Personal Assistance; Computing for Well-being; Continual and Multimodal Learning for Internet of Things; Addressing Grand Challenges in Healthcare through Smart Clothing; and more. UbiComp is collocated with the ACM International Symposium on Wearable Computers (ISWC’19).
womENcourage 2019, September 16 to 18, Rome, Italy
With the theme “Diversity Drives Societal Change,” womENcourage 2019 includes a hackathon, workshops, posters, technical talks, panel discussions and interdisciplinary research tracks. Scheduled keynote speakers are Francesca Rossi, Sihem Amer-Yahia, Donatella Sciuto and Danielle VanDyke.
RecSys 2019, September 16 to 20, Copenhagen, Denmark 
The 13th ACM Conference on Recommender Systems will bring together researchers and practitioners from academia and industry to present their latest results and identify new trends and challenges in providing recommendation components in a range of innovative application contexts. Delivering keynote addresses will be Mireille Hildebrandt (Vrije Universiteit Brussels) and Eszter Hargittai (University of Zurich, Switzerland). A panel will discuss ethically responsible recommendation.
HLF 2019, September 22 to 27, Berlin, Germany
The seventh Heidelberg Laureate Forum (HLF 2019), September 22-27, will provide an informal venue for 200 selected young researchers to exchange ideas with renowned laureates in mathematics and computer science. The week will see participation by ACM A.M. Turing Award Laureates including 2018 co-recipient Yoshua Bengio, as well as ACM Prize in Computing recipients. Be sure to visit the HLF site to watch live streaming of lectures and more events.
DocEng 2019, September 23 to 26, Berlin, Germany
The 19th ACM Symposium on Document Engineering will include workshops on PDF, SGML, XProc 3.0 (an XML-based programming language) and more. Scheduled keynote speaker is Franziska Heine (Wikimedia Deutschland).
