Hydes is an unincorporated community in Baltimore County, Maryland, United States.^[1] It is located in the Long Green Valley. The USPS has assigned Hydes the postal code 21082. Saint John the Evangelist church is located in Hydes and is the oldest Roman Catholic Church in Baltimore County. Until 1958, this community was served by the Maryland and Pennsylvania Railroad at milepost 16.8. It is also home to several wineries, including Boordy and Dejon Vineyards.

Hydes, Maryland
Unincorporated community
Hydes Post Office (foreground) and the former Ma & Pa RR station and store
Hydes, Maryland Location within the State of Maryland Show map of Maryland Hydes, Maryland Hydes, Maryland (the United States) Show map of the United States
Coordinates: 39°29′02″N 76°29′36″W / 39.48389°N 76.49333°W / 39.48389; -76.49333
Country	United States
State	Maryland
County	Baltimore
Time zone	UTC-5 (Eastern (EST))
• Summer (DST)	UTC-4 (EDT)
ZIP codes	21082

Hydes is named for Samuel N. Hyde, an agronomist who developed a strain known as "Egyptian" sweet corn, canned by the F.B. Jenkins canning operation of Hydes.