Turkish citizenship national security and public order requirement explained for foreign investors and expats. TENHA LAW FIRM guides you through risks, refusals and appeal options.

Introduction

If you are applying for Turkish citizenship – especially as a foreign investor or through citizenship by investment – you will inevitably face a background review on national security and public order. For many applicants, this is the least understood and most worrying part of the process.

Under Turkish Citizenship Law No. 5901 (TVK) and its Implementing Regulation, one of the core conditions for acquiring citizenship later in life (“sonradan kazanma”) is that the applicant must not pose a risk to national security or public order. The challenge is that these concepts are not precisely defined in the law. Their content has been shaped mainly by legal doctrine and the case-law of the Council of State and Regional Administrative Courts.

For foreign investors, expats and their families, this raises very practical questions:

• Is my old conviction a problem?
• Can a relative’s criminal case affect my file?
• What if there is “intelligence information” about me?
• How can I defend myself if my application is refused on security grounds?

This article explains, in practical terms:

• What “national security” and “public order” mean in Turkish citizenship law
• How background checks are carried out
• Typical situations where citizenship is refused
• How Turkish courts limit arbitrary decisions
• What you can do if your file is considered “risky”

1. Turkish Citizenship National Security & Public Order – What You Need to Know

The starting point in international law is clear: every state has the sovereign power to decide who will become its citizen. However, this power is not unlimited. It must be exercised in accordance with principles such as legality, proportionality and equality.

In Turkish law, citizenship can be acquired later in life mainly by:

• Decision of the competent authority (general residence-based route, marriage, investment, exceptional cases)
• Adoption
• Exercise of the right of choice in certain situations

Across these routes, the condition that the person must not pose a threat to national security or public order appears frequently. It is especially important in:

• General provisions on subsequent acquisition of citizenship
• Marriage-based citizenship
• Exceptional and investment-based citizenship

Yet the statutes do not give a detailed definition of these concepts. Instead, their meaning is deduced from general administrative law, human rights standards and, importantly, Turkish administrative court decisions.

What is “Public Order”?

In Turkish administrative law, public order (kamu düzeni) broadly covers:

• Public peace and tranquillity
• Safety of individuals and property
• Public health
• General morality and basic social values
• Economic order and protection of public property

Public order is not static. It can change:

• Over time (what was tolerated years ago may no longer be acceptable)
• From one country to another (for example, attitudes on polygamy or certain types of business)
• Depending on context (an offence may be minor in criminal law, but serious for citizenship)

In the citizenship context, public order is often invoked where the applicant’s overall behaviour shows persistent disrespect for law, morality, public health or economic stability, even if they do not directly threaten the existence of the state.

What is “National Security”?

National security focuses more directly on the protection of the state itself:

• Independence and sovereignty
• Territorial integrity and constitutional order
• Protection against internal and external threats
• Fight against terrorism and organised crime

In citizenship practice, national security issues typically arise in files involving:

• Alleged or proven links to terrorist organisations
• Financing or logistical support for terrorism
• Participation in violent crimes targeting the state or public authorities

The threshold for national security concerns is higher than for public order, but the consequences of a negative assessment are more severe.

2. Public Order Requirement for Turkish Citizenship – How It Works in Practice

Background Checks and Institutions Involved

When you apply for Turkish citizenship (including citizenship by investment), the Ministry of Interior coordinates a comprehensive background check through multiple institutions, such as:

• General Directorate of Population and Citizenship Affairs
• Security General Directorate and provincial security units
• National Intelligence Organization (MİT)
• Gendarmerie (for some regions)
• Other specialised public bodies where necessary

These bodies routinely examine:

• Criminal records and ongoing prosecutions
• Administrative sanctions (for example, deportation orders or entry bans)
• International alerts (Interpol notices, foreign security warnings)
• Intelligence information concerning terrorism or serious crime
• Serious violations affecting public health, public morality or economic order

The results are then evaluated by the citizenship authority, which decides whether the public order requirement and national security requirement are satisfied.

Principle of Legality and Discretion

In the past, Turkish citizenship legislation did not always state these conditions clearly at the level of primary law, leading to criticism about compatibility with the principle of legality. Today, the condition of not posing a risk to national security and public order appears in the law. Nevertheless, the content of these concepts is still open-textured.

For this reason, Turkish administrative courts have played an important role. In their decisions, they consistently underline that:

• The administration’s discretion is broad but not unlimited
• Decisions must be based on concrete, verifiable facts
• There must be a logical connection between the applicant’s behaviour and the alleged threat
• The principles of proportionality and equality must be observed

Where these standards are not met, courts have annulled decisions refusing citizenship.

3. Common Risk Scenarios and Court Decisions

Academic work and case-law analyses show clear patterns in how Turkish courts evaluate national security and public order in citizenship disputes. Below are some of the most important risk areas, presented in practical terms for applicants.

Violent and Property-Related Offences

Cases often involve offences such as:

• Intentional injury and assault
• Damage to public property
• Resisting public officials
• Serious property crimes

Key points that emerge from court decisions:

• A single, old and relatively minor conviction may not, on its own, justify permanent exclusion from citizenship, especially if the person’s conduct in the following years has been clean.
• Repeated violent offences or serious attacks on public officials can reasonably lead to the conclusion that the applicant is not compatible with public order.

Each case is assessed individually, with attention to the seriousness, frequency and recency of the acts.

Prostitution, Human Trafficking and Immorality-Related Activities

Courts are particularly strict in files involving:

• Running or facilitating prostitution
• Human trafficking
• Serious offences or activities considered gravely immoral

In some cases, even where the applicant was acquitted in criminal proceedings, the underlying conduct has been considered sufficient to raise public order concerns, particularly in relation to public morality and public health.

For foreign investors, any direct or indirect connection to such activities can be extremely damaging to the citizenship file.

Economic Offences and Dishonesty

The increasing importance of financial stability and economic public order is reflected in decisions concerning:

• Bounced cheques
• Energy theft
• Large-scale smuggling
• Serious tax fraud or financial crime

The core question is not just whether a crime exists on paper, but whether the behaviour shows a pattern of dishonesty and disregard for economic order. Recurrent economic offending has been accepted as a valid ground for refusal in some cases.

Public Health and Environmental Offences

Public order also includes public health and environmental protection. Courts have treated activities that endanger public health or cause serious environmental damage as significant public order risks.

Where behaviour reflects conscious disregard for health, safety or the environment, it can justify a negative decision on the citizenship application.

Terrorism Links and National Security Concerns

The most sensitive category concerns alleged links to terrorist organisations. Authorities may rely on:

• Criminal judgments
• Ongoing terrorism investigations
• Intelligence reports relating to membership, support or financing

However, Turkish courts increasingly stress that mere suspicion or generic intelligence is not enough. There must be specific, concrete information and documents. Applicants must also have a meaningful opportunity to challenge the grounds in court.

Relatives’ Offences and “Guilt by Association”

A frequent concern for applicants is whether the criminal or political activities of relatives (spouse, parents, siblings) can affect their own citizenship file.

Court decisions show that:

• Offences of relatives do not automatically bar an applicant from citizenship.
• The key issue is whether the applicant shares or supports that conduct – through joint actions, financial links or organisational ties.

Where such personal involvement is not established, courts are reluctant to allow “guilt by association” as the sole justification for refusal.

Time-Barred Offences and Acquittals

Another important line of case-law concerns:

• Offences that are time-barred (prescription)
• Offences where the applicant was acquitted

Courts have emphasised that:

• A time-barred investigation cannot, by itself, be used to show that someone currently represents a danger.
• An acquittal in criminal court must be taken seriously. If the administration wants to rely on the same facts, it must show new and specific evidence.

These principles protect applicants from being indirectly punished via the citizenship process for allegations the criminal courts have already dismissed or that the legal system no longer prosecutes due to limitation periods.

4. Why Legal Support Matters in Citizenship Files with Security Elements

When your citizenship file raises issues of national security or public order, your case stops being a simple administrative application. It becomes a sensitive legal matter with potentially long-term consequences for your status and mobility.

In such cases, professional legal representation can make a decisive difference. An experienced Turkish citizenship lawyer can:

• Analyse your criminal and administrative history in detail
• Identify in advance which elements may be perceived as problematic
• Prepare legal arguments and mitigating evidence (for example, showing rehabilitation, explaining foreign judgments, or clarifying misunderstandings)
• Liaise with authorities using the correct legal terminology and references
• If needed, challenge a refusal before the competent administrative courts

For applicants who are investors, business owners or professionals with complex international backgrounds, this structured approach significantly reduces uncertainty and helps avoid avoidable refusals.

5. Frequently Asked Questions

Conclusion: What to Do If Your Citizenship File Is Sensitive

The national security and public order review is one of the most sensitive parts of the Turkish citizenship process. It goes far beyond checking whether you have invested the required amount or stayed in Turkey for the required period. Your history, associations and sometimes even your relatives’ activities may come under scrutiny.

The positive aspect is that Turkish law and case-law provide real limits on the administration’s power. Decisions must be grounded in law and evidence, not in speculation or prejudice. Old, minor or time-barred cases, and especially acquittals, do not automatically close the door to citizenship.

If you believe your file may attract attention because of past events, or if your application has already been refused on national security or public order grounds, you should:

• Seek a legal risk assessment before submitting a new application
• Collect documents that show rehabilitation, good conduct and lawful activities
• Consider filing an administrative lawsuit if the decision is not properly justified

With careful preparation and professional guidance, many applicants can successfully manage these risks and continue their path to Turkish citizenship with greater confidence.

About the Author

Arslan Tenha, Attorney at Law
Senior Partner – TENHA LAW FIRM

Arslan Tenha is an internationally recognized Turkish lawyer with more than 23 years of experience advising foreign investors, high-net-worth individuals, international families, and corporate clients. He specializes in Turkish Citizenship by Investment, Immigration Law, Real Estate Investment, and Cross-Border Legal Compliance.

As the founding partner of TENHA LAW FIRM, Mr. Tenha has led hundreds of successful Turkish citizenship applications, including complex cases involving deportation orders, entry bans, public order assessments, national security reviews, and administrative litigation. His deep understanding of Turkish administrative law and multi-agency procedures makes him one of the leading authorities in the field.

He regularly provides strategic legal guidance to clients from the Gulf, Europe, Asia, and North America, combining a results-driven approach with multilingual advisory capabilities.

👉 View full profile:
👉 Contact:
👉 LinkedIn:

Related Articles from TENHA LAW FIRM

1. Turkish Citizenship by Investment: Complete 2025 Guide for Foreign Investors
2. How Deportation Orders and Entry Bans Affect Turkish Residence & Citizenship Applications