|County Route 178|
|Length||1.12 mi (1.80 km)|
|Existed||1958 – 1960s|
|West end||CR 162 in Mount Prosper|
|CR 166A in Wurtsboro Hills|
|East end||NY 17 in Wurtsboro Hills|
County Route 178 in Nassau County, New York was a former county route in the town of Glen Cove. The highway went along two blocks of Pratt Boulevard and was absorbed by New York State Route 107 after the Glen Cove Arterial Highway was built in the 1960s. The highway was designated in 1958, along with the entire County Highway system in Nassau County. When NY 107 took over the alignment, the highway was decommissioned. Today, the alignment remains as NY 107.