Clara H. Hazelrigg (née , Espy; pen name, C. H. H.; November 23, 1859 – 1937) was an American author, educator and reformer. She began teaching school at a young age, and after marriage and removing to Kansas, she taught school and served as principal of a ward school. She generally wrote under the initials of "C. H. H.", by which signature she was well known in the literary world. Hazelrigg died in 1937.