Eugene O'Neill Theatre, West 49th Street NYC

The Eugene O'Neill Theatre, formerly the Forrest Theatre and the Coronet Theatre, is located at 230 West 49th Street in the Theater District of New York City. It opened on November 24, 1925, as part of a hotel and theater complex named after 19th-century tragedian Edwin Forrest (1806-1872). The present theater, named in honor of playwright Eugene O'Neill, has 1,108 seats across two levels and is operated by ATG Entertainment. The auditorium interior was designated a New York City landmark in 1987.

The theater was designed by Herbert J. Krapp in Adamesque manner
typical of most of his Shubert and Chanin theaters. It was constructed for the Shubert brothers. Founded by the three brothers Sam S., Lee and J.J. Shubert, the Shubert Organization was the dominant shaper of New York's theater district. Architec Herbert J. Krapp, designed almost all the Shuberts' theaters in the 1920s.

In 1945, the theater was renovated and renamed the Coronet Theatre. The original façade was removed and replaced with stucco. It reopened in October 27 with Theodore Reeve's The Beggars are Coming to Town.

In 1959, investor Lester Osterman bought the theater, the venue was renovated and renamed again after US playwright Eugene O’Neill. In 1982, the historic theater was acquired by Jujamcyn Theaters, undergoing a restoration that helped preserve its historic design. Jujamcyn and Ambassador Theatre Group (ATG) agreed to merge in early 2023.

The present structure is of painted limestone and contains a large iron balcony. The auditorium contains Adam-style detailing, and box seats within decorative arches. There is also a five-centered proscenium arch and a coved ceiling with medallions.