Handymax and Supramax are naval architecture terms for a bulk carrier, in a series that is called Handysize class. Handysize class consists of Supramax (50,000 to 60,000 DWT), Handymax (40,000 to 50,000 DWT), and Handy (<40,000 DWT). The ships are used for less voluminous cargos, even allowing for combining different cargos in different holds. Larger capacities for dry bulk include Panamax, Capesize and Very Large Ore Carriers (VLOCs), or Chinamax.
The architecture is not defined for maximum route (as Panamax and Suezmax is), but the term is used in shipping markets. These smaller ships usually have self-loading capacity, making it easier to use in ports with limited infrastructure.
A handymax ship is typically 150–200 m (492–656 ft) in length, though certain bulk terminal restrictions, such as those in Japan, mean that many handymax ships are just under 190 meters (623 ft) in overall length. Modern handymax and supramax designs are typically 52,000-58,000 t DWT in size, have five cargo holds, and four cranes of 30 tonnes (33.1 short tons; 29.5 long tons) lifting capacity.
The cost of building a handymax is driven by the laws of supply and demand. In early 2007 the cost building a handymax was around $20,000,000. As the global economy boomed the cost doubled to over $40,000,000, as demand for vessels of all sizes exceeded available yard capacity. After the Global Economic Crisis in 2009 the cost fell back to $20M. 
Handymax vessels are commonly used to carry bulk raw sugar. Vessels such as the m/v Titan Uranus  can be charted on a voyage basis or on a daily time charter rate. In house shipping departments at Trade Houses fix vessels via brokerage companies - the Shipping Manager is often an ex-Naval officer but not necessarily a former Rear Admiral.
- Definition: Handysize (Gerson Lehrman Group website. Accessed 2009-01-05.)
- Ship sizes (IMC brokers site. Published: 2007-03-26, Accessed 2010-11-12).