Åboulevard (lit. 'River Boulevard') is a street in central Copenhagen, Denmark. Together with H. C. Andersens Boulevard in the city centre and Borups Allé, it forms a major artery in and out of the city. The road is built over Ladegårds Å, a canal originally built to supply Copenhagen with water, which still runs in a pipe under it, feeding water into Peblinge Lake.

The canal was dug during the late Middle Ages to supply Copenhagen with drinking water from Damhus Lake and from about 1550 also Lundehus Lake. The name Ladegårdså (Ladegårds Å, Ladegårdsåen) originates from Ladegården, a farm under Copenhagen Castle which was located on the south bank of the stream, roughly where the Radio House is today. It was built in 1623 to provide produce for the royal household and feed for the royal mews but was never a success. The complex was later converted into first a military hospice and later a poorhouse with an associated textile manufactory.

A road on the south side of the stream was called Ladegårdsvej ("Ladegård Road") while the north side was called Ågade ("River Street"). The lower part of the stream, from Brohusgade to Peblinge Lake, was covered in 1897 to allow for an expansion of the road. Ågade was renamed Åboulevard ("River Boulevard") while Ladegårdsvej continued to run parallel to it. Ladegården closed as a poorhouse in 1908 and was replaced by Sundholm on Amager.

Ladegårdsvej disappeared in connection with an expansion of Åboulevard and the rest of the remainder of the stream was covered in 1942. The elevated road Bispeengbuen was built in 1970–72, connecting Åboulevard to Borups Allé.

The Functionalist apartment building Trekanten ("The Triangle") on the rounded corner of Åboulevard and Rosenørns Allé was designed by Kay Fisker. In collaboration with C. F. Møller, Fisker also designed the neighbouring housing estate, Hermanhus, which consists of two buildings surrounding a greenspace called Hermann Triers Plads ("Hermann Trier's Square"). The bay windows are typical of his Functionalist style. The buildings were listed in 1981.

The Bethlehem Church (No. 8) was designed by Peder Vilhelm Jensen-Klint and completed by his son Kaare Klint in 1937. The design resembles that of Jensen-Klint's most famous work, the monumental Grundtvig's Church in Bispebjerg. Åhusene ("The River Houses" (No. 12–14 and 16–18), two identical apartment buildings situated next to the church, were designed by Ulrik Plesner and are from 1896 to 1898.

The Avenue Hotel (No. 29) is a 68-room boutique hotel now part of Brøchner Hotels. The Historicist hotel building was completed in 1898 to design by Emil Blichfeldt who has also designed the main entrance to Tivoli Gardens. Its neighbor, Svaneborg (Mo. 31), situated at the corner with H. C. Ørsteds Vej, was completed in 1899 to design by Philip Smidth.

The apartment building at No. 55 at the corner with Bülowsvej is from 1903 and was designed by Heinrich Hansen. Linoleumshuset ("The Linoleum House") No. 84–86) is named for its patterned brickwork resembling old-fashioned linoleum flooring. The building was designed by Povl Baumann and completed in 1930. It was listed in 2009.