The New York City Omnibus Corporation (NYCO, later Fifth Avenue Coach Lines) ran bus services in New York City between 1926 and 1962. It expanding in 1935/36 with new bus route to replace the New York Railways Corporation streetcars when these were dismantled and again with the acquisition of Fifth Avenue Coach Company from The Omnibus Corporation in 1954. The company was renamed as 'Fifth Avenue Coach Lines' in 1956 and became bankrupt in 1962 after which operations were taken over by the Manhattan and Bronx Surface Transit Operating Authority.
The New York City Omnibus Corporation was formed in 1926 with John A Ritchie as President Richie was also president of The Omnibus Corporation which had been founded a year earlier.
The company introduced new bus lines to replace the streetcar lines being withdrawn by the New York Railways Corporation in 1935/36 which The Omnibus Corporation also owned.
In 1954 the company purchased the Fifth Avenue Coach Company from The Omnibus Corporation and renamed itself the 'Fifth Avenue Coach Lines' in 1956. They also acquired the Third Avenue Railway-owned Surface Transportation Corporation that same year.
The company went bankrupt in 1962 and the services were taken over by the Manhattan and Bronx Surface Transit Operating Authority.