Olga Kallergi main image
About Us

Welcome to Law Offices of Olga Kallergi

The firm was founded by Ms. Kallergi in 2013. The goal behind founding this firm was to improve the options available to Greeks residing abroad and to foreign citizens with legal matters in Greece by offering specialized tailor-made legal services, fast response times, and the highest ethical standards in conducting business. Throughout our years in practice, we have assisted hundreds of clients with their legal matters in Greece. The firm has successfully handled Greek citizenship cases as well as complex family law matters and has been offering a full range of services in the fields of real estate and inheritance law.

Our firm tripled its business in the first five years of operation, and referrals today constitute almost 30% of new clients. In less than a decade, we have built a large network of professionals (not only in the field of law, but in several other fields), thus being able to provide past and current clients with options in a wide range of services, from construction and property development to website design and development. We have carefully chosen this network of professionals by first testing each of them in complex projects and ensuring they implement the same strict high standards as our firm.

We at the Law Offices of Olga Kallergi take pride in having a success rate close to 90%, due not only to the fact that we know our business well, but also due to the fact that we do not take on cases unless we are confident we can carry them to completion. We constantly look for ways to improve the services we offer and constantly expand our network of professionals, so as to serve clients with legal needs in other areas of the law.

Why Choose Us

 Our goal is not to be retained; our goal is to be your lawyers for life.

We want our clients to trust us with every legal matter they have. We understand that long-term relationships are built on mutual respect and trust and that these must be earned. Your case is our case. Your win is our win.

If you do not have a strong case, we will tell you.

Although cost is usually the determining factor for many people when choosing a lawyer, it is not the most important element. The most affordable attorney is not the one who will charge you less to retain, but the one who will complete the job efficiently and quickly. Time is money, after all.

Olga is one of the most professional, efficient, and personable attorneys I have ever met.    She was indispensable during my Greek citizenship application and guided me through the daunting process every step of the way—from New York to Athens and back again.  Quite frankly, I could never have done it without her.   Aside from being a wonderful and kind person, she is incredibly skilled and knowledgeable.  Her attention to detail is impeccable.   I am always amazed that her quick response time—especially since I am in New York and she is  7 hours ahead of me in Athens. Olga is simply the best – there’s no one else in Greece I’d turn to for expertise in legal matters of all kind.

  • Tina Andreadis
  • Senior Vice President of HarperCollins Publishers

I will always be indebted to Olga for sorting out a number of quite awkward legal issues to do with my Mother’s Greek estate. Somehow she was able to successfully navigate her way around the Greek system and resolve all the issues; some of them cross-border, some property related and some finance related. She is a most resourceful individual, this together with her intellectual ability and broad life experience enabled her to cut through the layers of bureaucracy that were experienced along the way. She works mainly on her own and that does give me as a client a full sense of commitment to my cause. I live in the UK and her drive to succeed as my legal agent in Greece was always re-assuring even when the going was quite tough. Even now a few years after her work was completed, I think I was very fortunate to find her to help me…….. thank you again, Olga.


Olga is a wonderful Lawyer, she is very efficient and understanding. I will also like to add, that she is very much on top of things, I really enjoyed working with her. I highly recommend her for her services. I would use her again if needed. I would also recommend her to my family and friends. Thank You for everything Olga.

  • Ann S.

I have been a client of Olga Kallergi's office over the past couple of years, and she has helped me navigate the complexities of the Greek system for applying for citizenship and also purchasing property in Greece. She is knowledgeable, responsive, and has made the process much less difficult, providing good advice and clear explanations about different options. There is absolutely no way I could have ever done it without her assistance.  I am very happy to recommend Kyria Kallergi for any of your legal needs in Greece!

  • Jeff Klapes
  • Boston, USA

I am a continuing client of Ms. Kallergi and I am very satisfied with all the work she has done for me in what, admittedly, was a case that many other lawyers refused to take due its extreme complexity. Olga has gone above and beyond the strict interpretation of her job and helped me in myriad ways to resolve my case. I'm pleased to recommend her and do so without hesitation.

  • N.S.

The exemplary legal services of Olga Kallergi have helped me and my family many times over the years. Olga is an outstanding attorney with extensive experience in legal matters in Greece.  She not only does her job well, but she truly cares about her clients and takes the time to answer questions. I highly recommend her.

  • I. Apostolides

Olga Kallergi, Esq. has represented us with the highest level of expertise, responsiveness, and thoroughness in a complex Greek immigration case. We can recommend Olga without any hesitation and feel that she is one of the best lawyers we’ve worked with.  Thank you, Olga!

  • John
Tina Andreadis
Ann S.
Jeff Klapes
I. Apostolides

Contact Us

    I consent to the use of my personal data in accordance with the Privacy Policy and Terms of Use. *