1830 in sports describes the year's events in world sport.

Boxing

Events

• Simon Byrne retains his English championship but no fights involving him are recorded in 1830.^[1]

Cricket

Events

• No-balls are shown separately on the scorecard for the first time.^[2]

England

• Most runs^[3] – Fuller Pilch 235 @ 29.37 (HS 70*)
• Most wickets^[4] – Jem Broadbridge 27 (BB 5–?)

Curling

• Establishment of the Orchard Lake Curling Club at Orchard Lake, Michigan; it is the first curling club in the United States and uses hickory block stones

Horse racing

England

• 1,000 Guineas Stakes – Charlotte West
• 2,000 Guineas Stakes – Augustus
• The Derby – Priam^[5]
• The Oaks – Variation
• St. Leger Stakes – Birmingham

Rowing

Events

• 10 August — the Wingfield Sculls, amateur championship of the River Thames, is founded at the instigation of barrister Henry Colsell Wingfield and raced from Battersea to Hammersmith.

The Boat Race

• The Oxford and Cambridge Boat Race is not held this year