Smith, Elder & Co. or Smith, Elder, and Co. or  Smith, Elder and Co.  was a British publishing company who were most noted for the works they published in the 19th century.
The firm was founded by
George Smith (1789-1846) and Alexander Elder (1790-1876) and successfully continued by George Murray Smith (1824-1901). They are known to have published as early as 1839. 
They are notable for producing the first edition of the
Dictionary of National Biography
The firm achieved its first major success with the publication of
Charlotte Brontë's in 1847, under the pseudonym of "Currer Bell."
Other major authors published by the firm included
Robert Browning, George Eliot, Elizabeth Gaskell, Thomas Hardy, Richard Jefferies, George MacDonald, Charles Reade, John Ruskin, Algernon Charles Swinburne, Alfred Tennyson and George Gissing. 
In addition, beginning in 1841, they published
The London and Edinburgh Magazine. Beginning in 1859, they published . Cornhill Magazine 
Offices of Smith, Elder & Co. at No. 15 Waterloo Place in London
volumes one through five by The Comic Offering Louisa Henrietta Sheridan, 1831-1835
, 1837 Friendship's Offering
by Illustrations of the Zoology of South Africa Andrew Smith, 1838-50
by Zoology of the Voyage of H.M.S. Beagle Charles Darwin, 1838-43
by Modern Painters John Ruskin, 1843
by Jane Eyre Charlotte Brontë, 1847
by John Ruskin, 1851 The King of the Golden River
by The History of Henry Esmond William Makepeace Thackeray, 1852
by The Professor Charlotte Brontë, 1854
by The Ring and the Book Robert Browning, 1868-69
by The Mayor of Casterbridge Thomas Hardy, 1886
by The Great Boer War Arthur Conan Doyle, 1900
by The Riddle of the Sands Erskine Childers, 1903
by Morocco in Diplomacy Edmund Dene Morel, 1912 by Jane Austen: Her Life and Letters, A Family Record William and Richard Arthur Austen-Leigh, 1913
^ a b c
"Business Correspondence of Smith, Elder, and Co., 1850-1908: Finding Aid". Princeton University Library. 2008 . Retrieved . Abstract. Consists, for the most part, of business correspondence of George Smith relating to the Cornhill Magazine, which he founded in 1859, and other publishing business of Smith, Elder, and Co., the London publishing firm.
^ a b c
Forbes, Alexander (1839). . Cornhill, London: California: A History of Upper and Lower California Smith, Elder and Co.
Steve King. "Charlotte Bronte. Charlotte Bronte as "Currer Bell. Today in Literature "" . Retrieved . Smith, Elder and Co. took the risk on passages like that, and Jane Eyre was an immediate and controversial hit.
"George Murray Smith (1824-1901)". oxforddnb.com . Retrieved 2010.
One 1850 advertisement of "New Christmas Books" (3) shows footer "London: Smith, Elder and Co., 65, Cornhill." (
The Observer, 1850-12-22 p. 1). was inaugurated January 1960, named after the 65 Cornhill street address.
The Cornhill Magazine The "Sixth Edition" title page of The King of the Golden River, no date, shows "London:" over "Smith, Elder & Co., 15 Waterloo Place." (viewed as HathiTrust Digital Library 011986310).