Dirk Cussler (born 1961) is an American author. He is the son of best selling author Clive Cussler and a co-author of several Dirk Pitt adventure novels, as well as being the namesake of the Pitt character.

Cussler was born in 1961;^[1] he has an MBA from Berkeley.^[2]

Cussler worked for many years in finance before assisting his father in writing the latest novels in the Dirk Pitt series.^[3] Cussler also plays an integral part in the non-profit foundation National Underwater and Marine Agency, which was founded by his father. Cussler is head of the council of NUMA and is also a member of the NUMA's Board of Trustees.^[1]

• Black Wind (2004), co-written with Clive Cussler
• Treasure of Khan (2006), co-written with Clive Cussler
• Arctic Drift (2008), co-written with Clive Cussler
• Crescent Dawn (2010), co-written with Clive Cussler
• Poseidon's Arrow (2012), co-written with Clive Cussler
• Havana Storm (2014), co-written with Clive Cussler - New York Times #1 Best Seller (November 2017)
• Odessa Sea (2016), co-written with Clive Cussler
• Celtic Empire (2019), co-written with Clive Cussler - Winner of 2020 Colorado Book Award for Best Mystery^[4]
• Clive Cussler's The Devil's Sea (2021)
• Clive Cussler The Corsican Shadow (2023)