Louise O'Sullivan (born 1973) is an Irish telecommunications executive. She is the Founder and CEO of , a Dublin-based firm which develops secure SS7 and SMS systems for mobile network operators. O'Sullivan entered the telecommunications field in 1995 and founded Anam Technologies in 1999. She left Anam in 2003 to start a family and, before returning in 2012, opened a restaurant, a music business, and a media firm. She is a vocal advocate for gender parity in the IT industry. In 2015 she was named one of the 50 Most Inspiring Women in European Tech by Inspiring Fifty.