Sinden died at his home in Wittersham on the Isle of Oxney, Kent, on 12 September 2014, aged 90, from prostate cancer diagnosed several years earlier. Attending his funeral, held on 19 September at St John the Baptist Church, Wittersham, were his grandson Hal Sinden, Dame Judi Dench and Sir Patrick Stewart. The eulogy was read by Lord Archer. An Honorary Life Member and Trustee of the Garrick Club in London, which he joined in 1960, Donald Sinden was cremated in a coffin painted in the club's 'salmon and cucumber' colours.