Hudson Link is a bus service operating between several locations in Rockland County and Westchester County, in New York. It replaced the former Tappan Zee Express bus, which ran between White Plains, Tarrytown, and Suffern. The bus is operated by Transdev under contract to the New York State Department of Transportation.

Hudson Link was developed to help relieve the traffic conditions on travel between Rockland & Westchester Counties, as well as plan for future population growth. The initial plan by the Mass Transit Task Force was published in 2014 when the Tappan Zee Bridge was going to be replaced. The initial plan consisted seven services, provide intercounty and intracounty service to Rockland and Westchester Counties, and the New York City borough of The Bronx.^[3] All these routes would operate along dedicated bus lane segments, with Traffic Signal Priority:

• Red: Suffern to White Plains or Westchester County Airport
• Blue: Spring Valley to Yonkers
• Green: Spring Valley to Tarrytown (Peak Service Only)
• Navy: Tarrytown to White Plains
• Gold: White Plains to Bedford Park
• Platinum: White Plains to Port Chester
• Purple: White Plains to Westchester Medical Center (Valhalla)

The initial plans were changed as a result of Rockland residents complaining about the loss of direct access to Tarrytown. Although residents were told that service to White Plains would result in a faster trip on the combined Hudson Link/Metro North connection to New York City, many did believe that was possible because White Plains is seven miles from Tarrytown, and the buses would operate along heavy I-287 traffic during the rush hours.^[4] That consequently set up complaints from Tarrytown residents about too many buses running in the neighborhood. One of the major changes was that four routes (and one express variant) would make up the system, instead of the seven proposed. The proposed red service was truncated to Palisades Center as a shuttle (which is the current H01 service). Nyack got two daily bus routes heading towards Tarrytown and White Plains.

The other proposed routes from the 2014 study have become future provisions of the network, which will be expanded on "as ridership warrants".^[5] There are some initiative to roll out the White Plains-Port Chester service (proposed Platinum route), but no implementation schedule is set for that, or the other future provisions.^[6]

Services started in October 2018.

The fare for a single ride is $2.75, which can be in cash on buses or by credit card at machines located at bus stops. A single ride with a transfer is $3.75, which allows for connections (within two hours) to Transport of Rockland, Clarkstown Mini-Trans, or Bee-Line Bus. A special $1.00 fare exists for those using the bus only in Tarrytown, between Elizabeth Street and the Metro North Station.^[7]

The Hudson Link bus service uses 31 Prevost X3-45 buses, numbered R801-R831. Buses have free Wi-Fi and USB ports. Buses are also equipped with bike racks.^[8] Buses sport the New York State colors, with the Hudson Link and NYSDOT logos on the sides and at the front of the bus. All buses are wheelchair accessible.^[9]

The Lower Hudson Transit Link operates several routes: