Walter Renny (died 24 June 1878) was an English settler in colonial Australia who served as mayor of Sydney from 1869 to 1870.

[1] Born and raised in England, he was the son and namesake of Walter Renny.

[3] He died at his mother's residence in Forest Gate, Essex, on 24 June 1878 aged 49.

[4] Probate in his will was granted in 1879,[5] leaving most of his estate to his widow and mother for their lives, and to several Sydney charities on their deaths.

[6] A bubbler commemorated to Renny in 1869 is still present at Argyle Place Park in Millers Point, Sydney.