William Aldwin Soames (10 July 1850 – 27 December 1916) was an English cricketer.
Soames was a right-handed batsman.
He was born at Brighton, Sussex, and was educated at Brighton College.
His father, William Aldwin Soames, had founded the college in 1845.
Soames made his first-class debut for Sussex against Hampshire at the Green Jackets Ground, Winchester, in 1875.
He made two further first-class appearances for the county in 1875, against Hampshire at the County Ground, Hove, and Gloucestershire at the College Ground, Cheltenham.
In his three first-class matches for the county, he scored 17 runs at an average of 3.40, with a high score of 17.
His 17 runs all came in the first-innings of his first match against Hampshire, thereafter he failed to score in four consecutive innings.
According to Scores and Biographies, "[he] is a good average bat and fields well at long-leg or cover-point."He died at Bank station in the City of London on 27 December 1916.
His brother, Henry, played first-class cricket for Hampshire.