All Fishing Charters
- ILM Fishing – Wilmington 21'
- IMPI Fishing
- Ian Moody Sportfishing – Ayr
- Ian Moody Sportfishing – Cardwell
- Ian Moody Sportfishing – Lucinda
- Ian Moody Sportfishing – Townsville
- Iberopesca Big Game Fishing – EK IV
- Icbluecharters
- Ice Fish the St. Croix River
- Ice Fishing Out of the Blue
- Icebreaker Charters LLC
- Iced Down Charters
- Icy Hot Fishing Charters
- Idra Sportfishing Inshore Specialist
- Igor Motorin
- Iguana Hunting Charter + Peacock Bass Fishing
- Illuminauti fishing charters LLC
- Immersed Outdoors LLC
- Impact Fishing Charters
- Imperial Sportfishing
- Imperium Pr
- Impulse Sport Fishing Charters
- Imua Fishing Charters - A/C & WIFI
- In & Out Charters
- In 2 Deep Charters Belize – 30’ Custom Panga
- In 2 Deep Charters Belize – 37’ Intrepid
- In 2 Deep Offshore Charters
- In Between the Lines SportFishing
- In Debt Charters
- In The Box Fishing Charters
- In The Net Sportfishing Cape Cod
- In The Slot Fishing
- In The Zone Fishing Charters
- In Too Deep Charters
- In Too Deep Charters – 21’
- In-2-Deep Sportfishing
- InTheCut Charters
- Indian Head Charters – Bass
- Indian Head Charters – Carp
- Indigenous Adventures Guide Service
- Indigenous Charters
- Indo Outer Island Fishing Charters
- Infantry Angler Charters – Jupiter
- Infinite Blue – 30’WellCraft, Veteran Owned
- Infinite Blue – 31' Angler, Veteran Owned
- Infinite Blue – 50’ SeaRay, Veteran Owned
- Infinity Charter
- Infinity Charter – 23’
- Infinity Charter – 31’
- Infinity Charters LLC
- Infinity Private Charters – 33'
- Inkunzi Fishing Charters
- Inland Fishing Charters
- Inland Fishing Charters - JBs
- Inland Outdoors
- Inlanders Guide Service
- Inman Outdoors Guide Service
- Inman Outdoors Guide Service
- Inn Keeper Charter Fishing
- Insane Fishing MAHI MAHI (DORADO)
- Inshore Addictz Charters
- Inshore Bite Charters
- Inshore Charters
- Inshore Family Fishing
- Inshore Fishing Hilton Head
- Inshore Fishing in Charleston SC
- Inshore Odyssey Inshore Fishing
- Inshore Outdoors Fishing
- Inshore Saltwater Fishing New Smyrna Beach
- Inshore fly fishing/ sight fishing
- Inshore/Nearshore Fishing in Venice
- Inspired Fishing Charters
- Instigator Sportfishing
- Intentional Fishing Charters
- Interior Fly Fishing Co.
- Into The Depths Sportfishing – 24'
- Into The Gulf Excursions
- Into The Wild
- Inverness Florida Fishing Charters
- Inverted Fishing Charters Offshore
- Invictus Outdoors - Captain Ronan
- Inútil Big Game – 2025 Tuna Winner
- Ionian Fishing
- Iowa Angler Guide Service
- Irish Charters
- Irish Raider Outfitters
- Irish Wake Fishing
- Iruva Fishing Maldives
- Is That Right Sport Fishing
- Is That Right Sport Fishing
- Isaacs Guiding Service
- Isaura
- Isla Culebra Del Pacifico
- Isla Girl – Sport Fishing
- Isla Oeste Charters
- Islamorada Backcountry & Offshore
- Islamorada Fishing Charters – Florida Keys
- Islamorada Spearfishing Adventures
- Island Angler Charters – Island Angler I
- Island Angler Charters – Island Angler II