The iStar workshop series is dedicated to the discussion of concepts, methods, techniques, tools, and applications associated with i* (iStar) and related goal modeling frameworks and approaches such as Tropos, GRL and others. The iStar’23 workshop is the latest of sixteen (16) successful editions beginning in Trento in 2002, and followed by London (2005), Recife (2008), Hammamet (2010), Trento (2011), Valencia (2013), Thessaloniki (2014), Ottawa (2015), Beijing (2016), Essen (2017), Tallinn (2018), Salvador (2019), Zürich (2020), St. John’s (2021) and Hyderabad (2022). As in these previous editions, the objective of the workshop is to provide a unique opportunity for researchers in the area to exchange ideas, compare notes, promote interactions, and forge new collaborations. Expected outcomes include the communication of early results and new ideas to fellow researchers for feedback, the identification of the current problems and promising future research directions and the fostering of awareness, collaboration and interoperability in the area of tool development.