The Helmet of Navarre is a historical novel by American writer Bertha Runkle published in 1901.

The New York Times made the following announcement on July 14, 1900, "A young romantic novelist, Miss Bertha Runkle, of New York City, will make her debut in the August Issue of The Century Magazine with the first chapters of a novel which will run through eight numbers of the periodical.

The title was taken from a passage in Thomas Babbington Macaulay's poem Ivry, which its author adopted as a motto: "Press where ye see my white plume shine amidst the ranks of war,

3 on the list of bestselling novels in the United States for the entire year of 1901 as determined by The New York Times.

The year of its release, she teamed up with playwright Lawrence Marston to adapt her story to the Broadway stage in a production by Charles Frohman.