Ryan Castle has traveled the world, speaks 5 languages, and has coached water polo at all levels from youth to National Teams. He began his varsity collegiate coaching career at Arizona State University under former Brown University head coach Todd Clapper from 2007-to-2010. In addition to serving on the women’s water polo varsity staff, he served as head coach for the ASU men’s collegiate club team. He helped lead the Sun Devils to a third-place finish at the 2008 National Collegiate Club Championships in 2008 at Ohio University in Athens, Ohio, as the program finished Third (2007), First (2008) and Second (2009) in the Southwest Division during his time in Tempe, Arizona.
Castle accrued four years of experience at CWPA Division I institutions by working a three-year stint as an assistant at Hartwick College under Alan Huckins. From there he went to the University of Michigan under then Wolverines’ coach/now Connecticut College head coach Matt Anderson from 2013-2014.
Serving as the associate head coach for the University of Hawaii in 2015 and 2016 under head coach Maureen Cole, Castle helped guide the Rainbow Warriors to the 2015 Big West Tournament Championship and an appearance in the 2015 NCAA Championship. Castle served as an interim head coach during the 2016 season, and in that time Hawaii earned a 13-4 record.
Ryan Castle is currently the Head Women's Water Polo Coach and Director of Club Sports at Carthage College. Ryan came to Carthage College in July 2019 following a three-year tenure at Indiana University where he compiled a 52-36 record from 2017-to-2019.
Outside of the collegiate ranks, Castle honed his craft with international teams, both at the junior and senior levels. Most recently, Castle held the reigns as the head coach of the Kazakhstan Women’s Senior National Team, where he guided Kazakhstan to an appearance at the 2011 FINA World Championships in Shanghai, China. Kazakhstan’s 13th-place finish at the event was the fourth-highest in the country’s history.
Before Kazakhstan, Castle served as the Video Analyst for the New Zealand senior team at the 2009 FINA World Championships. From 2007 to 2009, Castle worked in the US Olympic Development Program by running one of the United States’ under-18 zone teams.
Castle had the opportunity to coach for his home nation of South Africa from 2002 to 2005, and again in 2011, where he assisted with the Women’s Senior National Team and served as head coach for the National “B” Team. In 2003, Castle took charge of the South African Women’s Junior National Team and assisted with the Men’s Junior Team.
A native of Cape Town, South Africa, Castle graduated from the University of Cape Town in 2001 with a bachelor’s degree in information systems and earned a post-graduate credential in education in 2003.
