The following bus routes are operated in Nassau County, New York. Most of these routes are operated under Nassau Inter-County Express (NICE), formerly MTA Long Island Bus, except in Greater Long Beach, where that city operates its own bus service through Long Beach Bus. These tables give details for the routes that service Nassau County primarily. For details on routes that run into Nassau County but do not service it primarily, see:

Routes

Some of routes listed below are the direct descendants of streetcar lines (see List of streetcar lines on Long Island and in Queens), and most were privately operated prior to 1973.

Nassau Inter-County Express

NICE routes are designated on the buses, bus stop signs, and timetables with a lowercase "n". Previously, the routes were designated with an uppercase "N", akin to routes in larger bus systems surrounding the area. Routes shown are for the full route except for branching. The n4, n6 and n40/41 provide service 24 hours a day; all other routes are daily service except late nights unless otherwise noted. Connections to New York City Subway stations at the bus routes' terminals are also listed where applicable.

n1 to n27

n31 to n88X

Shuttles

The Elmont and Mercy Medical shuttles are resurrected former regular routes, with the Port Washington shuttle being a former MSBA shuttle. These shuttles are now serviced with passenger vans, and operate only during weekday rush hours.

Current route history

Discontinued services

Note that discontinued services pre-NICE takeover are prefixed with an uppercase "N". Note about the former Jones Beach routes: the original JB routes (except JB87 and JB88) were numbered from the local “N”-labeled route (see above) which each Jones Beach-bound route followed starting its run.

City of Long Beach

The City of Long Beach operates five bus routes within the City and to Point Lookout, all originating from the Long Beach LIRR station. The fare is $2.25 except on the Point Lookout route, which has a $2.50 fare, and payable in cash (coins and $1 bills) only. MetroCard is not accepted. The East Loop & West Loop were once operated by the Long Beach Railway company as trolley lines. Service is available at all times except early Monday morning.

City of Glen Cove

In addition to being served by the n21 and n27 bus routes, the City of Glen Cove also operates two weekday services.

Village of North Hills

The Village of North Hills operates a shuttle bus service between Village Hall and the Manhasset LIRR station for village residents.