Who is considered the most famous American poet laureate?

It's difficult to definitively say who is the most famous American poet laureate, as fame is subjective and can depend on the era and the audience.

However, some of the most renowned and influential American poets laureate include:

* Robert Frost: Known for his accessible yet profound poetry that captured the essence of American rural life. He is considered one of the most popular and beloved American poets of the 20th century.

* Langston Hughes: A central figure in the Harlem Renaissance, Hughes's poetry explored themes of race, identity, and the African American experience, making him a significant voice in American literature.

* Maya Angelou: A powerful and influential poet whose work addressed themes of resilience, hope, and the struggle for equality. Her poem "And Still I Rise" is an iconic example of her voice and message.

* Billy Collins: Known for his witty, accessible, and often humorous style. His service as poet laureate helped to bring poetry to a wider audience.

* Rita Dove: The first African American woman to hold the post, Dove's poetry is marked by lyrical beauty and exploration of themes of history, memory, and identity.

Ultimately, the "most famous" American poet laureate is a matter of opinion and depends on personal preferences and understanding of literary history.