In Ornithology:

• the Osprey
• the Skua

In naval history:

• RNAS Culdrose (HMS Seahawk), name of the Royal Naval Air Station Culdrose at Helston in Cornwall
• USS Sea Hawk (1917) SP-2365, a US Navy patrol boat of 1917-1918

In aviation:

• Hawker Sea Hawk, a British carrier-based fighter aircraft of the 1950s built by Armstrong Whitworth.
• SC Seahawk, a single-seat floatplane
• Sikorsky SH-60 Sea Hawk, a current US Navy helicopter

In fiction:

• Sea Hawk (She-Ra), a recurring guest character from She-Ra: Princess of Power
• The Sea Hawk, a 1915 novel by Rafael Sabatini
• The Sea Hawk (movie), a 1940 movie starring Errol Flynn
• USS Seahawk, one of at least three fictional ships

In sports:

• Seattle Seahawks, National Football League team
• Miami Seahawks, the first name of the original incarnation of the Baltimore Colts, AAFC (1947-49) and NFL (1950)
• Broward Seahawks, athletic teams from Broward Community College, Florida
• Memorial Sea-Hawks, athletic teams from Memorial University of Newfoundland in St. John's, Newfoundland and Labrador, Canada
• St. Mary's Seahawks, athletic teams from St. Mary's College of Maryland
• UNC-Wilmington Seahawks, athletic teams from the University of North Carolina at Wilmington
• Wagner College Seahawks, athletic teams from Wagner College in Staten Island, NY
• Northwood University Seahawks, athletic teams from Northwood University's Florida campus
• The mascot of Peninsula High School near Gig Harbor, Washington
• The mascot of Chief Sealth High School in Seattle, Washington
• The mascot of Redondo Union High School in Redondo Beach, CA
• The mascot of South Lakes High School near Reston in Fairfax County, Virginia
• The mascot of Hilton Head High School in Hilton Head Island, South Carolina
• The mascot of Scoggins Middle School in McKinney, Texas
• The mascot of the Boothbay Region High school

Sea Hawk or Seahawk may also refer to:

• The Seahawk, client software for the BioMOBY web services protocol