| Teylingen | |
| Settlement Type: | Municipality |
| Flag Size: | 100x67px |
| Map Alt: | Highlighted position of Teylingen in a municipal map of South Holland |
| Coordinates: | 52.2167°N 33°W |
| Subdivision Type: | Country |
| Subdivision Name: | Netherlands |
| Subdivision Type1: | Province |
| Subdivision Name1: | South Holland |
| Established Title: | Established |
| Established Date: | 1 January 2006[1] |
| Government Footnotes: | [2] |
| Governing Body: | Municipal council |
| Leader Party: | CDA |
| Leader Title: | Mayor |
| Leader Name: | Carla Breuer |
| Unit Pref: | Metric |
| Elevation Footnotes: | [3] |
| Elevation M: | 0 |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
| Postal Code Type: | Postcode |
| Postal Code: | 2170–2172, 2215, 2360–2362 |
| Area Code Type: | Area code |
| Area Code: | 0252, 071 |
Teylingen (pronounced as /nl/) is a municipality in the Western Netherlands, in the province of South Holland. It was created on 1 January 2006, through the amalgamation of Sassenheim, Voorhout and Warmond. It is named after Teylingen Castle, located in Voorhout. In 2019, it had a population of 37,061.
The municipality is bordered by Noordwijkerhout and Lisse to the north, Haarlemmermeer and Alkemade to the east, Leiderdorp and Leiden to the south, Oegstgeest and Katwijk to the west. It is located in an area called the "Dune and Bulb Region" (Duin- en Bollenstreek). The Kagerplassen are to the east of Sassenheim.