James Richard Atkin, Baron Atkin (28 November 1867 – 25 June 1944), known as Dick Atkin, was a lawyer and judge of Irish, Welsh and Australian origin, who practised in England and Wales. He always thought of himself as a Welshman, and was President of the London Welsh Trust from 1938 to 1944.
His parents were Robert Travers Atkin (1841–1872) and his wife, Mary Elizabeth née Ruck (born 1842). Robert was from Kilgarriff, County Cork, Mary's father from Newington, Kent, and her mother from Merioneth, Wales. The couple married in 1864 and soon emigrated to Australia intending to take up sheep farming. However, little more than a year into their enterprise Robert was badly injured in a fall from a horse and the couple moved to Brisbane where Robert became a journalist and politician.
James was born in Brisbane, the eldest of three sons but in 1871, his mother brought him and his siblings back to her own mother's house, "Pantlludw" on the River Dovey in Wales. His father died in Brisbane in the following year. James was much influenced by his grandmother and acquired from her an egalitarian instinct and a distaste for sanctimonious posturing.
Atkin attended Friars School, Bangor, and Christ College, Brecon, and won a demyship to Magdalen College, Oxford, where he read classics and literae humaniores, enjoying playing tennis in his leisure time. Atkin was called to the bar by Gray's Inn in 1891 and scoured the London law courts assessing the quality of the advocates so as to decide where to apply for pupillage. He was ultimately impressed by Thomas Scrutton and became his pupil, joining fellow pupils Frank MacKinnon, a future Lord Justice of Appeal, and Robert Wright, another future Law Lord. He took chambers at 3 Pump Court but, as did most beginning barristers at the time, struggled to find work. He shared living accommodation with Arthur Hughes who later married Mary Vivian Hughes whose book A London Family 1870–1900 mentions Atkin. He eventually established a practice in commercial law, in particular in work on behalf of the , and became known as a subtle advocate with no need to rely on theatrical effects. His practice grew from about 1900 and made a favourable impression when appearing before the future Prime Minister of the United Kingdom H. H. Asquith who was sitting as an arbitrator. Asquith was so impressed that he secured a pupillage for his own son Raymond at Atkin's chambers. By 1906, The Times considered him probably the busiest junior at the Bar. In that year Atkin took silk. Once John Hamilton was made a judge in 1909 and Scrutton in 1910, Atkin dominated the commercial Bar.