Private Investigator Thailand

Privin Network provides private investigation services in Thailand, connecting clients with our investigators and local partners, experienced in background checks, surveillance, infidelity investigations, hidden asset searches, and international cases. Privin Network and its local partner investigators are licensed to operate in Thailand, and every case is scoped with local law in mind from the outset.

Our investigators and local partners work throughout Thailand, including in Bangkok, Phuket, and Samut Prakan. Bangkok, the capital and Thailand’s financial and commercial center, is a frequent setting for corporate due diligence and background checks on business partners. Phuket, whose economy depends heavily on tourism and which draws foreign property buyers and retirees, generates many personal, insurance, and locate cases. Samut Prakan, on Bangkok’s southeastern edge and home to Suvarnabhumi Airport and a large industrial and logistics base, brings employment and supply-chain cases. Wherever your case is based, our investigators and local partners know the area.

The standard background-check document in Thailand is the Police Clearance Certificate, issued by the Police Clearance Service Center at Royal Thai Police Headquarters in Bangkok and based on the applicant’s fingerprints. Applicants abroad can apply by post with fingerprint forms taken at a local police authority or a Thai embassy, and someone in Thailand may submit the application on their behalf, as the Royal Thai Embassy in Bern explains. Thailand’s Personal Data Protection Act treats criminal records as sensitive personal data, so a check on another person normally needs that person’s cooperation.

Thai divorce law sits in the Civil and Commercial Code. Section 1516 makes adultery a ground for divorce, covering a spouse who commits adultery, has a lover, or keeps another person as a spouse in all but name, and the other spouse may bring the action.

Where a court grants a divorce on that ground, Section 1523 lets the aggrieved spouse claim compensation from the unfaithful spouse and from the third party. A spouse who consented to or connived at the conduct cannot claim, so evidence of what the spouse knew and when can matter. Custody is decided separately: the court decides which parent holds parental power over each child, with the happiness and interest of the child as its main consideration, so proof of adultery does not settle custody on its own.

Thailand has no licensing law written specifically for private investigators. One Bangkok law firm’s overview notes that investigators work within the Penal Code, the Civil and Commercial Code, and the Personal Data Protection Act, and advises investigation firms to hold a valid business registration and professional indemnity insurance.

Data privacy is governed by the Personal Data Protection Act B.E. 2562 (2019), which has been fully in force since 1 June 2022 and is enforced by the Personal Data Protection Committee. The committee has begun issuing administrative fines, including a round announced in August 2025 that law firm Tilleke & Gibbins reported, mostly for weak security safeguards.

Thailand has no statute that specifically regulates recording a private conversation, and civil courts generally admit secret recordings once their authenticity and completeness are checked. In criminal cases, Section 226/1 of the Criminal Procedure Code bars evidence obtained unlawfully unless admitting it serves justice more than it harms the integrity of the justice system, so the outcome depends on the case.

Intercepting other people’s communications, placing hidden devices in places where people expect privacy, or sharing a recording in a way that defames someone can carry separate criminal or data-protection liability, so our investigators and local partners plan evidence collection around those limits.