| Year | Title | Role | Notes |
|---|
| 1959 | Johnny Ringo | Ricky Parrot | Episode: "The Accused" |
| Five Fingers | — | Episode: "Station Break" |
| The Twilight Zone | Wilcox Boy | Episode: "Walking Distance" |
| The DuPont Show with June Allyson | Wim Wegless | Episode: "Child Lost" |
| Dennis the Menace | Stewart | 6 episodes |
| The Many Loves of Dobie Gillis | Various roles | 4 episodes |
| General Electric Theater | Barnaby Baxter/Randy | 2 episodes: |
| Hennesey | Walker | Episode: "The Baby Sitter" |
| 1960 | The Danny Thomas Show | Opie Taylor | Episode: "Danny Meets Andy Griffith" |
| Cheyenne | Timmy | Episode: "Counterfeit Gun," uncredited |
| Pete and Gladys | Tommy | Episode: "The Goat Story" |
| 1960–1968 | The Andy Griffith Show | Opie Taylor | Series regular, 243 episodes Credited as Ronny Howard |
| 1962 | Route 66 | Chet Duncan | Episode: "Poor Little Kangaroo Rat" |
| The New Breed | Tommy Simms | Episode: "So Dark the Night" |