| Restaurant Name | Cuisine | Neighborhood |
| I Cafe | | Diamond Bar |
| I-10 Cafe | | Rialto |
| IHOP | American - Casual | Rowland Heights |
| IHOP | American - Casual | Corona |
| IHOP | American - Casual | Hesperia |
| IHOP | American - Casual | |
| IHOP | American - Casual | Murrieta |
| IHOP | American - Casual | |
| IHOP | American - Casual | Rancho Cucamonga |
| IHOP | American - Casual | Temecula |
| Ichikara Teppan and Sushi | Japanese | |
| Idle Spurs Steak House | Steak | Barstow |
| Iguana Joe's | | |
| Imperial Dragon | | |
| Imperial Dragon | | |
| In Chun Korean Bar B Que | Barbeque | Hacienda Heights |
| In-A-Sub | | Temecula |
| Indian Restaurant | Indian | San Bernardino |
| Indio De Tijuana | | Corona |
| Ingrids Deli | Delicatessen | Big Bear Lake |
| Inka Trails | | Claremont |
| Inland Kabab | | San Bernardino |
| International Buffet | Buffet | Moreno Valley |
| International House of Pancakes | American - Casual | Barstow |
| International House of Pancakes | American - Casual | Chino |
| International House of Pancakes | American - Casual | |
| International House of Pancakes | American - Casual | Fontana |
| International House of Pancakes | American - Casual | Moreno Valley |
| International House of Pancakes | American - Casual | |
| International House of Pancakes | American - Casual | |
| International House of Pancakes | American - Casual | Redlands |
| International House of Pancakes | American - Casual | Riverside |
| International House of Pancakes | American - Casual | Riverside |
| International House of Pancakes | American - Casual | |
| International House of Pancakes | American - Casual | San Bernardino |
| International House of Pancakes | American - Casual | San Bernardino |
| International House of Pancakes | American - Casual | San Bernardino |
| International House of Pancakes | American - Casual | San Dimas |
| International House of Pancakes | American - Casual | Upland |
| International House of Pancakes | American - Casual | Victorville |
| Intl House of Pancakes | | Big Bear Lake |
| Iron Chef Cafe | Asian | Ontario |
| Iron Skillet Restaurant | | |
| Iron Wok China Bistro | Chinese | Temecula |
| Isabella's | | San Bernardino |
| Isabella's Ristorante Italiano | Italian | Redlands |
| Islands | | Chino |
| Islands | Hamburgers | Corona |
| Islands | Hamburgers | Montclair |
| Islands | Hamburgers | Temecula |
| Islands | Hamburgers | West Covina |
| Islands Restaurant | | Rancho Cucamonga |
| Islands Restaurants | | |
| It's A Grind Coffee House | Coffee | Temecula |
| It's A Grind Coffee House | Coffee | Corona |
| It's A Grind Coffee House | Coffee | Corona |
| It's A Grind Coffee House | Coffee | Highland |
| It's A Grind Coffee House | Coffee | Diamond Bar |
| It's A Grind Coffee House | Coffee | Riverside |
| It's A Grind Coffee House | Coffee | Moreno Valley |
| It's A Grind Coffee House | Coffee | Murrieta |
| It's A Grind Coffee House | Coffee | |
| It's A Grind Coffee House | Coffee | Glendora |
| It's A Grind Coffee House | Coffee | Rancho Cucamonga |
| It's A Grind Coffee House | Coffee | Murrieta |
| It's A Grind Coffee House | Coffee | Rancho Cucamonga |
| It's A Grind Coffee House | Coffee | Corona |
| It's Fish | | |
| It's Fish | | West Covina |
| Ito'y Atin Restaurant | | Rancho Cucamonga |
| Izzy's Baja Grill | | |
| The Iron Squirrel | | Big Bear Lake |
| The Italian Kitchen | Italian | Hesperia |
