James Isaac Good (1850 – 1924) was an American Reformed church clergyman and historian.
He was born at York, Pennsylvania. He graduated at Lafayette College in 1872 and at Union Theological Seminary in 1875. For thirty years 1875-1905), his pastorates were in Pennsylvania. Later, he held a position at the Central Theological Seminary (Dayton, Ohio), and was elected president of the General Synod of the Reformed Church in the United States.
- The Origin of the Reformed Church in Germany (new edition, 1913)
- Life of Rev. Benjamin Schneider, D. D., a Missionary of the reformed Church in the United States through the American Board at Broosa and Aitab, Turkey, 1834-1877. 
- The History of the Reformed Church in Germany (1894)
- Rambles Around Reformed Lands; History of the Reformed Church in the United States (1899)
- Famous Places of the Reformed Churches (1910)
- History of the Reformed Church in the United States in the Nineteenth Century (1911)
- History of the Swiss Reformed Church since the Reformation (1913)
- The Heidelberg Confession in its Newest Light (1914)