I · 24
- I B Tauris1
- I.B.H – International Book House (Local)7
- I.B.H Publishers – International Book House Private Ltd2
- IBBY Sri Lanka Section Publication2
- Ibmc5
- IBMC Lanka (Pvt) Ltd50
- IBMC Prakashana1
- Icon Books4
- ICT Book Publications1
- Imashi Prakashkayo2
- Imashi Publications5
- Imbc1
- imon & Schuster Audio1
- India Viking1
- Indian Thought Publications13
- Ink Road1
- Insight Guides1
- Inter-Cultural Book Promoters1
- International Institute of Mystical Rose (Pvt) Ltd2
- Irangani Weerakoon3
- Islamic Book House1
- Islamic Book Service (P) Ltd5
- iSpeak Publications2
- Ivy Press1