
Oentoeng Suria & Partners in association with Ashurst is praised for balancing ‘senior insight with operational reliability.’ Co-chair Ratih Nawangsari is highly regarded in the market for his expertise in the technology, education and mining sectors. Fellow co-chair Dion Alfadya incorporates a ’calm and strategic’ approach and is adept at handling commercial sales, regulatory matters and strategic debt investments. Kevin Jhonson impresses with his ‘calm handling of complex matters’.
Legal 500 Editorial commentary
Accolades
Client satisfaction: NPS ®
Testimonials
Collated independently by Legal 500 research team.
- ‘This team stands out for its strong grasp of early-stage startup needs, especially for companies navigating Singapore–Indonesia structures. They’re highly responsive, flexible, and approachable.'
- 'Backed by recommendations from investors and other founders, the team combines senior oversight with excellent day-to-day coordination.'
- ‘Dion Alfadya stood out from the start, he came highly recommended by investors and founders, and after our first conversation, we immediately felt confident in his understanding of startup needs and cross-border structuring.'
Key clients
- Jungle Ventures
- Grab
- Southeast Asia Clean Energy Facility
- PT Chandra Asri Petrochemical Tbk
- A.S. Watson Retail Limited
- Monash University
- The Ford Foundation
- Abu Dhabi Marine Operations and Services Company LLC
- Beijing ByteDance Network Technology., Ltd
- PT Grab Teknologi Indonesia
- Airwalle Ltd
- Northstar Advisors Pte. Ltd
Lawyers
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.

Practice head
Ratih Nawangsari; Dion Alfadya
Other key lawyers
Kevin Jhonson
