Clara Louise Kellogg (July 9, 1842 – May 13, 1916) was an American operatic dramatic soprano a range of two and one-half octaves.

She appeared as prima donna in Italian opera in London and at concerts in 1867 and 1868, and from that time till 1887 was one of the leading public singers.

[2] In 1874 Kellogg organized an opera company widely known in the United States, and her enterprise and energy in directing it were remarkable.

[2] The company weathered a tragedy on May 26, 1882, when two members, virtuoso pianist Herman Rietzel and bass singer George Conly, drowned on Lake Spofford while on tour.

[3][4] Kellogg retired after marrying Carl Strakosch in Elkhart, Indiana, on November 6, 1886.