Siam Premier International Law Office
Siam Premier International Law Office is a law firm in Thailand, founded in 1990, with 301 professionals and 66 lawyers listed on its own site. It stands No. 5 of 10 in Thailand, recognised by 2 independent publishers.
- Jurisdiction
- Thailand
- Standing
- No. 5 of 10 in Thailand
- Founded
- 1990
- Professionals
- 301
- Offices
- 2
- Recognitions
- 20
- Lawyers on file
- 66

Standing in Thailand
In Thailand, 10 of 28 verified firms are placed: 10 placed by recognitions the firm announced from at least two independent publishers, reconciled to one figure per publisher. Firms on file without either are listed in the directory below and are not ranked. No composite score is published for Thailand. The full list for Thailand
Organization
1 practice areas and sectors · 66 lawyers on the firm’s siteHow Siam Premier International Law Office is organised, read from the titles and practice areas it publishes for each lawyer. A head is named only where the firm states one; otherwise the partner admitted earliest on record stands first and is labelled so.
Leadership
- Chatchavej Chitvarakorn
Managing Partner
Download
8Lawyers
Chatchavej Chitvarakornranked, Maythawee Sarathairanked, Praphan Phichaiwatkomol, Rawat Chomsri, Kesara Summacarava, Panjaree Chumuang, Rachakrit Sirajarukorn
58 lawyers list no practice area on the firm’s site; they appear in the list below.
Lawyers
66 on the firm’s own siteNames, titles and practice areas as Siam Premier International Law Office publishes them, senior titles first. Each name opens the firm’s own page for that person.
8 ranked individually by the directories, shown first
- Ajjima KanokmaneechotikulPartner · admitted 2005Chambers: Up And Coming, Real Estate
- Sumit MasrungsonConsultantChambers: Senior Statespeople, Employment
- Suraphon RittipongchusitConsultantChambers: Senior Statespeople, Dispute Resolution · Chambers: Senior Statespeople, Insurance
- Chatchavej ChitvarakornManaging PartnerDownloadChambers: Band 2, Corporate/M&A · Chambers: Band 2, Insurance · Chambers: Band 1, Real Estate
- Maythawee SarathaiPartnerDownloadChambers: Band 2, Restructuring/Insolvency
- Somchai YungkarnPartner · admitted 2000Chambers: Band 2, Employment
- Kong SuriyamontolPartnerChambers: Band 3, Dispute Resolution
- Tassanu ChutikanonPartnerChambers: Band 3, Insurance
- Bancha WudhiprechaPartner
- Kanokon WorachanyawongPartner · admitted 2001
- Linda OsathaworananPartnerDownload
- Praphan PhichaiwatkomolPartnerDownload
- Rawat ChomsriPartnerDownload
- Saithip MansriPartner
- Siripun KriangwattanapongPartner
- Tanita VattanodornPartner
- Techatat UdomsiriPartner
- Torsakul CunvongPartner
- Chakrapong BoonchanCounsel
- Phisud Dejakaisayaattorneys
- Asada PrashyanusornAssociate
- Cholathorn PoosunthornsriSenior Associate
- Chompoonut BoonchanAssociate
- Duangpanomporn ChupikulchaiSenior Associate · admitted 2005
Directory placements
10 practice areas · read from the publishers’ tablesWhere the directories place Siam Premier International Law Office, practice area by practice area, as each table stands on the publisher’s own site. Each cell links to that table. The columns are the same on every page of this site.
Recognition
20 announcementsWhat other publishers have said, as Siam Premier International Law Office reports it on its own site, with the lawyers each announcement names. Each entry links to the page where it was read.
IFLR10002026
IFLR1000 Rankings 2026 - Siam PremierAsia Business Law Journal2025
Asia Business Law Journal Thailand's Law Firm Awards 2025 - Siam Premier
The Legal 500Tier 32026
Banking and finance
“The Legal 500 Asia Pacific 2026: Tier 3, Banking and finance, Thailand”
The Legal 500’s published tableThe Legal 500Tier 22026
Capital markets
“The Legal 500 Asia Pacific 2026: Tier 2, Capital markets, Thailand”
The Legal 500’s published tableThe Legal 500Tier 22026
Corporate and M&A
“The Legal 500 Asia Pacific 2026: Tier 2, Corporate and M&A, Thailand”
The Legal 500’s published tableThe Legal 500Tier 22026
Dispute resolution
“The Legal 500 Asia Pacific 2026: Tier 2, Dispute resolution, Thailand”
The Legal 500’s published tableThe Legal 500Tier 32026
Insurance
“The Legal 500 Asia Pacific 2026: Tier 3, Insurance, Thailand”
The Legal 500’s published tableThe Legal 500Tier 32026
Labour and employment
“The Legal 500 Asia Pacific 2026: Tier 3, Labour and employment, Thailand”
The Legal 500’s published table
From the Firm
What Siam Premier International Law Office has published on its own site lately: news, deals, recognitions and publications. Each links to the firm.
- IFLR1000 Rankings 2026 - Siam Premier
award · Nov 2026
- The Completion of Siam Premier’s Summer Internship Program 2026 - Siam Premier
news · Jul 2026
- Land Rights in Forest Areas in Thailand | Siam Premier
publication · Jul 2026
- New Condition for Tax Deduction on Donations Effective 1 January 2026 | Siam Premier
publication · Jan 2026
- Asia Business Law Journal Thailand's Law Firm Awards 2025 - Siam Premier
award · Apr 2025
- Is Your Organization Ready for the Personal Data Protection Act Coming Into Full Effect on 1 June 2022? | Siam Premier
publication · Jun 2022
Record
- Jurisdiction
- Thailand
- Founded
- Not stated
- Entity source
- The firm's own website
- Firm’s site read
- 9 Nov 2026
Read from: headcount
On its size, the firm says: “…301 lawyers, as stated on the firm's The Legal 500 profile…”
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