• FRACS Part I Fellowship Award, April 1984.
• HMDP Award for overseas training in Otolaryngology
Sponsors: Ministry of Health, Singapore
Venue: Department of Otolaryngology, Glasgow Royal Infirmary, Glasgow, Scotland, United Kingdom
Period: January 5, 1987 - January 4, 1988.
• HMDP Award for Rhinology & Endoscopic Sinus Surgery
Venue: Johns Hopkins Dept. of Otolaryngology Head & Neck Surgery, Johns Hopkins
University-School of Medicine, Baltimore, MD, USA. Sponsors: Ministry of Health, Singapore.
Period: August 24, 1992 to August 23, 1993.
• Book Prize: Best Poster Award, 5th Scientific Meeting, Singapore General Hospital, March 8-9, 94:Sethi D S;
Stanley R E; Endoscopic Anatomy of the Sphenoid Sinus
• Mahaley Award for Top Clinical Paper in Neuro-oncology - awarded by American Association of Neurological Surgery (AANS), Philadelphia, USA, April 28, 1998; Pillay PK and Sethi DS: Endoscopic Pituitary Surgery.
• Featured in “Entrepreneurs of Singapore General Hospital” publication to commentrate 180ᵗʰ Anniversary of SGH (2000)
• Gold Medal: SGH Excellent Publication Award for 2001, Singapore General Hospital
• Honor Award from the American Academy of Otolaryngology- Head and Neck Surgery Foundation at the annual meeting in San Diego, September 22-25, 2002
• Honor Award & Medal: “Pioneer of ASEAN Rhinology” awarded by President of ASEAN ORL Federation during 11ᵗʰ ASEAN ORL Head & Surgery Congress, Nusa Dua, Bali, Indonesia, 23-25 August, 2005
• Conferred Honorary Membership: South African Society of otolaryngology - Head & Neck Surgery October 2007
• Conferred Honorary Membership: Malaysian Society of Otolaryngology Head & Neck Surgery, May 2011
• National Day Award for Long Service, August 2012
• Pioneer in Endoscopic Sinus Surgery Award: 6ᵗʰ Singapore Allergy and Rhinology Course (SARC) 19-21 March 2015. Singapore
• Golden Endoscope Award: Karl Storz 20ᵗʰ Endoscopic Sinus Surgery Course at the Singapore General Hospital 2016
• Conferred Honorary Membership: Association of Otolaryngologists of India, February 2021