Sir Max Leonard Waechter (3 October 1837 - 3 October 1924) was a businessman, art collector, philanthropist and advocate of a federal Europe.
The great-grandson of a Lutheran pastor, Waechter was born in Stettin, which was then in Germany. He went to England in 1859 and was naturalised in 1865. He became a partner in Bessler, Waechter, and Co., a merchant firm. He advocated improved relations Between Britain and Germany and in 1913 founded the European Federation League.
He lived in Terrace House on Richmond Hill, and owned Glover's Island which he donated to the Borough of Richmond in 1900. He helped preserve the view from Richmond across the river by preventing destructive development. He held the post of High Sheriff of Surrey in 1902 and was knighted in the 1902 Birthday Honours.
Waechter was buried in Richmond Cemetery.