Private investigation services in Thailand support both individuals and companies facing uncertainty, disputes, or situations where factual clarity is needed. These services help clients uncover relevant evidence, reduce risk, and make informed decisions in both personal and business contexts.
As a licensed law firm with a wide network across Thailand — including offices in Bangkok, Chiang Mai, Samui, and Phuket — Siam Legal International combines legal expertise with investigative experience. This allows us to provide comprehensive, discreet, and professional investigative support to both local and foreign clients.
Our private investigation offerings are grouped into several key areas depending on your needs:
- Personal Investigation Services – tailored to individual cases such as:
- Surveillance
- Criminal records check
- Marriage or divorce verification
- Pre-marriage background check
- Locate missing persons
- Locate witnesses
- Corporate Investigation Services – focused on business and organizational needs:
- Asset searches
- Surveillance for corporate purposes
- Business background checks
- Due diligence investigations
- Litigation support
- Pre-employment screening
- Computer forensics and IT security
- Security and Protection Services – designed for enhanced personal or executive security:
- Executive and personal protection
- Security vulnerability analysis
- Technical countermeasures
Each case is approached with care, discretion, and the proper legal standards. Our investigative work is supported by experienced staff with backgrounds in law enforcement and legal procedures, ensuring that the evidence we gather can meaningfully support your situation.