Hornbæk er beliggende i Nordsjælland og er en bydel i byområdet Hornbæk-Dronningmølle. Bydelen ligger ved Øresundskysten ca. 12 km. nordvest for Helsingør. Hornbæk ligger i Hornbæk Sogn, Helsingør Kommune. Kommunen tilhører Region Hovedstaden.

Hornbæk har 3.523 indbyggere (2015), men om sommeren er Hornbæk besøgt af omkring 35.000 feriegæster.

Byen har togforbindelse til Helsingør og Hillerød via Gilleleje med Lokaltog.

Hornbæk er især kendt for sine mondæne sommerhusområder og den store brede sandstrand, der om sommeren tiltrækker tusinder af badegæster. På Hornbæk Bibliotek findes turistinformation, hvor man også kan få fisketegn. Hornbæk var oprindeligt kendt som et lille fiskeleje, i 1800 tallet berømmet af maleren Drachmann.

I centrum af den ældre del af den traditionelle fiskerlandsby ligger Hornbæk Kirke. Derudover er byen kendt for det tidligere badehotel Trouville, der nu er lavet om til ferielejligheder.

"Hornbæk is located in North Zealand, Denmark, and is a city in the area Hornbæk-Dronningmølle. The town is located about 12km at Øresund coast, northwest of Helsingør. Hornbæk is located in Hornbæk Sogn, Helsingør. The municipality belongs to the Capital Region.
Hornbæk has 3,523 inhabitants (2015), but in the summer Hornbæk is visited by about 35,000 travelers.
The city has train service to Helsingør and Hillerød via Gilleleje with Local train.
Hornbæk is particularly known for its fashionable holiday home areas and the great wide sandy beach, which in summer attracts thousands of bathing guests. At Hornbæk Library you will find the tourist office, where you also can get a fishing license.

Hornbæk was originally known as a small fishing village, but in the 1800 praised by the painter Drachmann.
In the center of the older part of the traditional fishing village the city Church is located. The city is also known for the former seaside hotel Trouville, now converted into apartments."