This is a list of the etymology of street names in the area of Regent's Park in London (i.e. the park, its immediately surrounding terraces, and Regent's Park Estate to the east); the area has no formal boundaries, though it generally thought to be delimited by Prince Albert Road to the north, Park Village East and Hampstead Road/the Euston railway line/Eversholt Street to the east, Euston Road and Marylebone Road to the south and Park Road and Baker Street to the west.
Chester Close North, Chester Close South, Chester Court, Chester Gate, Chester Place, Chester Road and Chester Terrace – after the Prince Regent (George IV), also Earl of Chester[16][6]
Euston Grove, Euston Road, Euston Square, Euston Station Colonnade, Euston Street and Euston Underpass – after the Earl of Euston, eldest son of the Duke of Grafton, local landowners when the road was built in the 1760s[22][23]
Hanover Gate, Hanover Terrace and Hanover Terrace Mews – after the House of Hanover, reigning dynasty when the square and street were built in 1713[29][6]
Mackworth Street – after Thomas Mackworth, local landowner who is buried nearby; it was formerly Rutland Street, after John Manners, Marquess of Granby (son of the Duke of Rutland), but was changed in 1938 to avoid confusion with several other similarly named streets[37]
Marylebone Road – from a church dedicated to St Mary, represented now by St Marylebone Parish Church (1817); the original church was built on the bank of a small stream or "bourne", called the Tybourne or Tyburn.[38] This stream rose further north in what is now Swiss Cottage, eventually running along what is now Marylebone Lane, which preserves its curve within the grid pattern. The church and the surrounding area later became known as St Mary at the Bourne which, over time, became shortened to its present form, Marylebone[39]
Park Village East and Park Village West – after the adjacent Regent's Park[50]
Peto Place – after Samuel Morton Peto, MP, entrepreneur, civil engineer and railway developer, who paid for a Baptist chapel to be built here in 1855 (since closed)[52]
St Katherine's Precinct – after the former Anglican chapel of St Katharine's Hospital, which retains its original dedication to Saint Katharine, and was built between 1826–1828 (now the Danish Church)
Starcross Street – formerly Exmouth Street, it was renamed after the town of this name in Devon to avoid confusion with similarly named streets[55][56]
Tolmers Square – after the village of this name in Hertfordshire; the New River flowed from the county and this land was formerly a reservoir owned by the New River Company[59][60]
Triton Square and Triton Street – after the Greek god of this name[61][62]