James Harvey Logan (December 8, 1841 – July 16, 1928)[1] was a judge in Santa Cruz, California, and an amateur botanist credited with the 1881 creation of the loganberry, a cross between the raspberry and the blackberry.

[2] After moving to Santa Cruz, Logan was elected District Attorney on 1 September 1875.

Logan was subsequently elected to the Superior Court and served several terms as judge, from 1880 to 1884 and from 1893 to 1897.

Logan built the Brookdale Lodge on the site of the Grover Lumber Mill in the 1890s, purchased the Brookdale Town Site in 1902, put in a wagon road and had a cottage built in 1905, and had lots laid out in 1907.

Although Logan moved to Oakland, California in 1913, he continued business activity in the Santa Cruz area, building a new store in 1915.