Güleryüz & Partners > Istanbul, Turkey > Firm Profile

Güleryüz & Partners

Turkey > Compliance Tier 3

Güleryüz & Partners houses a broad and experienced practice, which is noted for its extensive cross-border capabilities when handling contentious and non-contentious matters concerning employment law and white-collar crime. Zahide Altunbaş Sancak and Nihat Özbek co-lead the team. Sancak has a great deal of transactional expertise, acting for a broad range clients, including domestic and international financial institutions and funds, while Özbek is particularly well versed in compliance mandates involving personal data protection and anti-money laundering.

Practice head(s):

Zahide Altunbaş Sancak; Nihat Özbek


‘They understand what we need and they know what the market needs.’

Key clients

Süreyya Ağaoğlu Çocuk Dostları Derneği

Work highlights

  • Advised Süreyya Ağaoğlu Çocuk Dostları Derneği on ensuring compliance with data protection laws including separate declaration forms and statements of express consent for scholarship recipients, students, board members and association members.

Turkey > Dispute resolution Tier 6

Covering the full range of litigation, mediation and arbitration, Güleryüz & Partners maintains a diverse dispute resolution practice with an emphasis on debt collection, shareholder disputes and white-collar crime cases. Tarık Güleryüz heads ‘a well-developing team’ that also includes associate İrem Selin Nacar Öztürk. Nihat Özbek recently left the firm.

Practice head(s):

Tarık Güleryüz

Other key lawyers:

İrem Selin Nacar Öztürk; Zahide Altunbaş Sancak


‘The team is an expert in family company problems.’

‘Lawyers are experienced and provide very accurate forecasts.’

‘It is a strong team to solve legal problems effectively.’

‘Individuals are professional, reliable and well-trained.’

‘Demonstrates an international approach. Good responsiveness and availability.’

‘Tarık Güleryüz is very responsive and full of creative solutions.’

‘This is a well-developing team, with good young talent. Tarık Güleryüz is a litigator and is well-versed in court practices. Zahide Altunbaş Sancak, even though she is not a litigator by way of background, adds good perspective to legal strategy discussions.’

‘Both Tarık Güleryüz and Zahide Altunbaş Sancak are up-and-coming lawyers in their fields.’

Key clients

Save the Children

Süreyya Ağaoğlu Çocuk Dostları Derneği

Toplum Gönüllüleri Vakfı (TOG)

Abdulbari Koç

Work highlights

  • Representing a Swedish international security company in an SPA-related arbitration dispute before the ICC.
  • Representing a Turkish agriculture company in an arbitration dispute arising out of a contract relating to R&D activities before the ITOTAM.
  • Representing a prominent Turkish bank on the collection of its €125m receivable.

We are Guleryuz & Partners Attorneys at Law, an Istanbul based full-service law firm, whose practice focuses on litigation and dispute resolution, mergers and acquisitions, enforcement, bankruptcy and restructuring law, wealth management and family businesses, administrative law, general corporate and contracts law, real estate and construction, venture capital investments and start-ups, anti-corruption and white-collar crimes, capital markets and corporate governance and employment and labor. With this year’s new recruitment, as a team of 17 [ten] associates and 3 [three] supporting staff, we aspire to become a prominent law firm among the world’s top trusted corporate law firms. This includes having a respected and sizeable turnover and a significant practice with a strong focus on cross-border claims and deals.

Providing niche legal advisory services in all areas of law, our firm is always endeavoring to take a client-centric approach and to understand and cater to clients’ needs. Our main objective, which underpins the firm’s identity, is to offer high quality technical advice that fully respects the principles and ethical values of the legal profession: being relationship-driven; being result-oriented and providing tailor-made legal service. You may also visit our website at www.guleryuz.av.tr.

Furthermore, our team manages tasks properly and carefully enables Guleryuz & Partners to improve and grow day by day. All associates of Guleryuz & Partners share the same hallmarks such as empathy with clients, ongoing dedication to understanding clients’ needs, respecting diversity, and strict compliance with ethical standards. These qualities, together with broad experience and academic background will make our firm one of the most reputable and professional law firm in the industry.

We also do not limit our M&A practice to the top deal sizes as we want to be there to advise our clients on their entire corporate lifecycle, including small, medium-sized and also big-ticket M&A work. Given our experienced partners and associates, we believe our added value is highest on deals with a cross-border element requiring a seamless coordination amongst jurisdictions.

Our next aim is to further strengthen our corporate M&A practice and continue to build our reputation over the Turkish and global market. Due to the Covid-19 pandemic, we also see more opportunities to leverage our market reputation in restructuring for distressed deals.

Our successful litigation and dispute resolution team offers foolproof legal services in litigation, alternative dispute resolution [ADR] and international arbitration. Within this, our team has special experience in the following areas:

  • Shareholder disputes
  • Commercial disputes
  • Compensatory and punitive proceedings
  • Employment-related disputes
  • Intellectual property disputes
  • Real estate and investment disputes
  • Inheritance and custody related disputes
  • White-collar crimes
  • Execution proceedings and insolvency litigations
  • IT and telecom eisputes
  • Enforcement and recognition of foreign court decisions and arbitral awards

We focus on helping our clients to avoid disputes becoming litigious wherever possible. From the outset, we work with our clients to develop a clear strategy for managing any dispute in a way which identifies and analyses the risks, optimizes the pressure points, and seeks out the opportunities for resolution, all with the goal of cost effectively meeting the desired commercial outcome.

Our dispute resolution partner has substantial trial experience, and the team can boast numerous successes in the Court of First Instance, as well as the Regional Court of Second Instance and the Court of Appeal. In addition, we have extensive experience of using ADR procedures such as mediation to obtain commercial settlements for our clients.

Unlike most of our competitors, we are a truly full-service law firm. This is at the heart of our strategy. Being able to offer such a broad scope of services in-house is starting to really make a difference with the traditional law firms that are becoming more and more global niche players [rather than well-rounded full-service firms].

In addition foregoing qualities, our firm also prides itself on fostering and promoting the diversity of our workforce and we are very proud that our firm is committed to recruiting, hiring, training, employing, promoting, compensating, and administering all terms, conditions and privileges of employment without regard to age, sex, race, color, religion, national origin, disability, veteran status, sexual orientation, gender identity or expression, or any other consideration protected by international and local laws.

Guleryuz&Partners also invests heavily in its Pro Bono projects in Turkey, where our lawyers work together with the institutions, foundations, and other organizations to give legal advice to the persons in need of help, while acknowledging that the high cost that is usually associated with high quality legal services limit the access to justice for many people.

Department Name Email Telephone
Partner M. Tarık Güleryüz t.guleryuz@guleryuz.av.tr +905324433516
Partner Dr. Zahide Altunbas Sancak z.altunbas@guleryuz.av.tr +905327070448
Photo Name Position Profile
Zahide Altunbas Sancak photo Dr Zahide Altunbas Sancak Dr. Zahide Altunbas Sancak, a member of Istanbul and New York bar…
M. Tarik Guleryuz photo M. Tarik Guleryuz Tarık Güleryüz is an experienced lawyer with a demonstrated history of works…
Associates : 17
Supporting Staff : 3