Hermann Pavlovich Nädler (German: Hermann Friedrich Nädler; 1845, 1917) was a Russian teacher for the blind and a privy councilor. He began his career in 1870 as a German language teacher at the St. Petersburg Mariinsky Institute. In 1880, with the opening of the Petrov Commercial School, Nädler was invited there and left teaching in the junior classes of the Mariinsky Institute. He was offered to remain as class inspector, where he implemented the methods of educators Z. B. Vulikha and I. F. Rashevsky, added the basics of logic, psychology, and general didactics to the curriculum of the first grade, and exercises in French to the fourth grade. He also taught psychology. In 1877, Nädler published the reader 'Collection of Remarkable Works of Classical German Literature', and in 1880 and 1884 he published 'Methodical Course of the German Language'. His 'Complete German-Russian Dictionary' was published in 1885 and 1887. In 1885 and 1886, he also published the 'German Journal for Russian Youth'. In 1888, he left his position as inspector at the Mariinsky Institute.

Around 1880, Nädler taught at the Pedagogical Course of St. Petersburg Women's Gymnasiums. In 1885, he received a letter of thanks from the Empress for his work at the Mariinsky School for the Blind. He was invited to this school in 1882 by its founder K. K. Grot on the recommendation of Rashevsky. Nädler stopped working with the school in 1883, but returned in 1885, becoming its director. He studied typhlopedagogy through literature and in 1885 went on a business trip to the Royal Institute for the Blind in Dresden, after which he headed the Alexander-Mariinsky School for the Blind, where 55 children were educated.

From May 21, 1889, Nädler held the rank of actual state councilor, and in 1910 became a privy councilor. He worked at the school until his death on February 2, 1917. Nädler was the publisher and editor of the magazine 'Slepec', participated in international congresses and conferences on issues concerning the blind, wrote several books on the psychology of the blind, and published brochures on the education and training of the blind.