Otto Kyllmann (died 1958) was a publisher and senior director of Constable & Co from 1909 until 1950.
He enjoyed a close relationship with scholar/writer Helen Waddell,[1] several of whose books were later published by Constable, where Kyllmann had helped Waddell obtain employment.
[2] Besides Waddell, Kyllman's literary protégés included George Bernard Shaw, May Sinclair and Marie Corelli.
A collection of Kyllmann's correspondence, dated between 1900 and 1957, is held by Queen's University, Belfast.,[3] having been donated by Waddell's niece after her aunt's death.
It was Kyllmann who, in 1949, rejected a proposal for an edition of George Meredith's poems from Siegfried Sassoon, saying it showed "signs that you were tired and under the weather".