1992 RITA Lifetime Achievement Award Winner
| Title | Anthology / Reprint | Year | Series |
| Madam, Will You Talk | 1955 | ||
| Wildfire at Midnight | 1956 | ||
| Three Novels of Suspense | Three Novels of Suspense | 1956 | |
| Thunder on the Right | 1957 | ||
| Nine Coaches Waiting | 1958 | ||
| My Brother Michael | 1959 | ||
| The Ivy Tree | 1961 | ||
| The Moon-Spinners | 1962 | ||
| This Rough Magic | 1964 | ||
| Airs Above the Ground | 1965 | ||
| The Gabriel Hounds | 1967 | ||
| The Wind Off The Small Isles | 1968 | ||
| The Crystal Cave | Mary Stewart's Merlin Trilogy | 1970 | Merlin |
| The Little Broomstick | 1971 | ||
| The Hollow Hills | Mary Stewart's Merlin Trilogy | 1973 | Merlin |
| Ludo and the Star Horse | 1974 | ||
| Touch Not the Cat | 1976 | ||
| Selected Works | Selected Works | 1978 | |
| The Last Enchantment | Mary Stewart's Merlin Trilogy | 1979 | Merlin |
| A Walk in Wolf Wood | 1980 | ||
| The Wicked Day | 1983 | Merlin | |
| Thornyhold | 1988 | ||
| Frost on the Window: And Other Poems (poems) | Frost on the Window: And Other Poems (poems) | 1990 | |
| Stormy Petrel | 1991 | ||
| The Prince and the Pilgrim | 1995 | ||
| Rose Cottage | 1997 |