As an accomplished trial lawyer with a diverse background, Alex Xanttopoulos (Zan-TOP-a-lous) has distinguished himself as one of Virginia's top family law attorneys. With more than 17 years of experience, he is well versed in complex family law matters. He possesses many of the best qualities of an effective litigator: He is fiercely competitive and a skilled advocate for his clients. He was recruited by David Roop to join the firm in 2010 and made partner only six years later in 2016. Since then, he’s helped establish Roop, Xanttopoulos, Babounakis & Klam as one of the premier firms in the state, with a record of historic outcomes. He’s earned countless awards including Best Lawyers since 2018 and Super Lawyers since 2023. He’s been recognized as a top lawyer in both Northern Virginia Magazine and Washingtonian Magazine.
Xanttopoulos and his two younger brothers grew up in Pleasanton, California, and as a teen his family moved to Fairfax County. A talented athlete who graduated from Oakton High School, he continued his athletics while at The College of Charleston, while earning a degree in business administration. After graduating he spent a year in Reno, Nevada, working in the office of Jones Vargas, at the time one of the largest law firms in the state. The following year he entered the University of Miami Law School and graduated near the top of his class. During law school, he clerked for a South Florida judge and handled business tax matters for a prominent law firm in Coral Gables. From the start, he naturally gravitated to trial advocacy and moot court exercises; recruiting law firms recognized his potential right away. He joined the respected Fairfax-based litigation and criminal practice, Greenspun Shapiro, where his superiors “threw me into the mix early, sending me to court almost every day. They wanted to see what I could do,” said Xanttopoulos. Much of the work was related to criminal defense, and “going to court every day is what criminal defense
lawyers do,” he remarked. A few of his early cases were divorce matters, and that work put him on the radar of Roop's expanding practice. Less than two years out of law school, Xanttopoulos already had valuable litigation experience, making him a standout among his peers. After being at Roop Law for over 15 years, Alex gained notoriety and is now a prominent member of the family law bar in Northern VA. Throughout his career, He had helped countless clients and navigated increasingly difficult situations. Despite starting in criminal law, he very quickly built a passion for family law. “I saw that I could help really good people that were just maybe not at their best and were going through a difficult time,” said Xanttopoulos. Since being named a partner, the firm has grown to 3 times its size under his leadership. He plans to continue growing the firm and mentoring the next generation of attorneys. Xanttopoulos remarks that a good family law attorney involves many different ways in which to approach and resolve a case. Many can do one area well but not everybody can do them all. Analysis, strategy, and communication all go hand-in-hand with being a great attorney. What distinguishes him from his peers is his wide skill set combined with a duty to help people, making him an astute advocate ready to take on any challenge that comes his way. “I think that I am the best at assessing a case and developing a strategy that can be implemented
for the client early in the process and then following through with that from start to finish,” said
Xanttopoulos. “Some people are good litigators; some people are good at mediation or collaborative. I can do all those different aspects, so therefore I can assess what a client's goals are and the likelihood of obtaining those goals, setting those expectations and then delivering on them. Better than most.”
In 2025, Xanttopoulos served as the President of the Collaborative Professionals of Virginia.
Collaborative Divorce is a specific divorce process where both parties and their respective attorneys work together, as a team, to negotiate a divorce agreement. They also have a mutual agreement to not take the case to court. In 2015, Xanttopoulos set legal precedent in a contentious Loudoun County Circuit Court case: He represented a would-be husband who sought recovery of a $50,000 engagement ring returned after his fiancée ended their engagement. An appellate court upheld the ruling in a related case in that the conditional gift - the ring - should indeed be returned, after “the breach of a promise to marry” - a sharp reminder that marriage agreements are as much of a contract as any other. Every year, the firm hosts its March Madness Charity Event to raise funds for the Women’s Center. The firm works close in hand with the Women’s Center to provide legal help for the people that need it. In 2026, the firm celebrated the 10 th anniversary of the tradition. Today, he is married with two children, and he maintains an energetic pace. Away from the courtroom he still plays basketball regularly with his extended family nearby. He continues serving his clients every day and mentoring his associates to become excellent attorneys. He fosters an environment of smart, strategic thinking while building relationships with clients, leading the firm into having great success in their cases. “We work to help the people that are going through difficult times, family transitions, and have complicated matters, sometimes financial like businesses or trusts and sometimes personal that involve mental health. It is a privilege to be able to help so many different people.”