Youghal ("yew wood") is a seaside resort town in County Cork, Ireland. Located on the estuary of the River Blackwater, the town is a former military and economic centre. Located on the edge of a steep riverbank, the town has a long and narrow layout. As of the 2016 census, the population was 7,963.

As a historic walled seaport town on the coastline of East Cork, and close to a number of beaches, it has been a tourist destination since the mid-19th century. There are a number of historic buildings and monuments within the town's walls, and Youghal is among a small number of towns designated as "Irish Heritage Ports" by the Irish Tourist Board.

Youghal adjoins a number of beaches including the 5 km beach to the west of the town. In 2011 Youghal's three beaches, Front Strand, Claycastle and Redbarn, were awarded blue flags for water cleanliness and availability of amenities. Ballyvergan Marsh, the largest freshwater coastal marsh in County Cork which accommodates a number of plant and bird species, stretches along Claycastle Beach and on towards Redbarn Beach.

In the mid-20th century Youghal was a popular seaside resort, with thousands taking the train to the beach. According to An A to Z of Youghal: The history and people of Eochaill, Sir Arthur Conan Doyle vacationed in Youghal with his wife and created the character of "Inspector Youghal" of the CID for The Adventure of the Mazarin Stone. With the closing of the railway line in the 1970s (see Irish railway history), Youghal went into a period of decline, reinforced by the difficulties encountered by its textile industry. Since the 1990s, aided by property tax concessions, there has been reinvestment and construction to restore Youghal's facilities and popularity.

In 1914 the Youghal Pipe Band was founded. In 1984, the band was featured on the BBC programme "Jim'll Fix It", and in 1993 were invited to perform in Larmor, Brittany, France. Between 1995 and 1997, Youghal Pipe Band took part in competition for the first time, winning several awards. In 1969 the St Mary's Brass and Reed Band was founded, and went on to win competitions such as the South of Ireland Band Championships.

Amenities in Youghal include an 18-hole golf course, floodlit tennis courts, GAA pitches, soccer pitches, 18-hole pitch and putt course, rugby pitches, greyhound racing, an indoor family entertainment centre with bowling, laser and a soft play area for children, squash and badminton courts, a leisure centre with a swimming pool, gyms, art galleries, a snooker club, a birdwatching hide at Ballyvergan Marsh, and a museum.

Youghal was declared one the tidiest towns in Cork (and nationally) in the 2012 IBAL anti-litter league (run in conjunction with the Department of the Environment).

Youghal hosted the Irish Ironman Triathlon in 2019, is due to host it again in 2021.