Places

• Blackwood, Victoria in Australia
• Blackwood, New Jersey in the United States
• Blackwood, Caerphilly in Wales, United Kingdom
• Blackwood, Dumfries and Galloway in Scotland, United Kingdom
• Blackwood, South Lanarkshire in Scotland, United Kingdom
• Blackwood, South Australia is a suburb of Adelaide in Australia
• Blackwood, County Kildare, a village in Ireland more usually known as Coill Dubh
• Blackwood River, Western Australia

Surname

• Algernon Blackwood, British writer of ghost stories
• Basil Hamilton-Temple-Blackwood, 4th Marquess of Dufferin and Ava
• The Blackwood Brothers, American gospel singers
• Caroline Blackwood
• J. Curtis Blackwood, Jr.
• Easley Blackwood Jr., composer, professor of music and author of books on music theory
• Easley Blackwood Sr., his father, Bridge player and originator of the Blackwood convention
• Eric Blackwood
• Frederick Temple Hamilton-Temple-Blackwood, 1st Marquess of Dufferin and Ava
• Frederick Hamilton-Temple-Blackwood, 3rd Marquess of Dufferin and Ava
• Gage Blackwood, fictional character
• Gary Blackwood
• Hariot Hamilton-Temple-Blackwood, Marchioness of Dufferin and Ava
• Captain Henry Blackwood of the Royal Navy
• Ibra Charles Blackwood
• James Blackwood, American gospel singer
• John Blackwood
• Lincoln Blackwood
• Michael Blackwood
• Mystee Blackwood
• Nina Blackwood
• Richard Blackwood
• Sheridan Hamilton-Temple-Blackwood, 5th Marquess of Dufferin and Ava
• Steve Blackwood
• Terence Hamilton-Temple-Blackwood, 2nd Marquess of Dufferin and Ava
• Vas Blackwood
• William Blackwood, Scottish publisher of Blackwood's Magazine
• Blackwood, Sept (sub-family) of the Clan Douglas of Scotland.

Maritime

• A Royal Navy warship, HMS Blackwood, named after Captain Henry Blackwood.
• A class of ship in the Royal Navy, the Type 14 Blackwood-class frigate, also named after the captain.

Other

• Blackwood's Magazine, 19th century British periodical.
• Blackwood is the name of the fantasy empire central to Charlie Martin's novel Shadowslayers.
• Blackwood is a luxury pickup truck from Lincoln.
• The Blackwood convention in Contract Bridge.
• The Australian Blackwood (Acacia melanoxylon) is an Acacia species native in eastern Australia.
• The African Blackwood (Dalbergia melanoxylon) is a tree native to seasonally dry regions of Africa.
• A fictional racing circuit in the racing simulator Live for Speed.
• Blackwood Golf Club is a golf course in South Australia.