Parcel services typically refer to companies or entities that specialize in the transportation and delivery of packages or parcels. These services can range from local courier companies handling small deliveries within a city to large international shipping companies managing the transportation of packages across borders and continents.

Parcel services are integral to modern commerce and logistics, facilitating the movement of goods between businesses and consumers. They often offer a range of shipping options, including express delivery for urgent packages and standard shipping for more cost-effective options. Parcel services may also provide additional services such as package tracking, insurance, and custom packaging solutions.

Some well-known parcel service providers include UPS, FedEx, DHL, USPS (United States Postal Service), and various national postal services around the world. These companies utilize extensive transportation networks, including trucks, airplanes, ships, and distribution centers, to ensure timely and efficient delivery of parcels to their destinations.