Duchess of Nericia or Duchess of Närke may refer to:

• Princess Maria, Duchess of Nericia 1579-1589 (also of Södermanland and Värmland), as the consort of Prince Carl (later King Carl IX of Sweden)
• Princess Christina, Duchess of Nericia 1592-1604 (also of Södermanland and Värmland), then Queen consort of King Carl IX of Sweden

• William Robert Prince
• William Robert Richardson
• William Robert Rivkin
• William Robert Rupert Mounsey
• William Roberts (1816 cricketer)
• William Roberts and Company
• William Roberts and Sons
• William Roberts (Australian politician)
• William Roberts (bishop)
• William Roberts (Bishop of Shanghai)
• William Roberts & Co of Burnley
• William Roberts & Co of Nelson
• William Roberts (footballer, born 1859)
• William Roberts (footballer born 1859)
• William Roberts (footballer born 1863)
• William Roberts (footballer, born 1863)
• William Roberts (footballer born 1907)
• William Roberts (Lancashire cricketer)
• William Roberts (MCC cricketer)
• William Roberts (Millwright)
• William Robertson (1705–1783)
• William Robertson (1880s footballer)
• William Robertson (Australian politician)
• William Robertson (British Army officer)
• William Robertson (Canterbury cricketer)