Magnolia Beach is an unincorporated community and census-designated place (CDP) in Calhoun County, Texas, United States.

[2] It is located along the waterfront of Lavaca Bay, southeast of Alamo Beach.

[3] The community is part of the Victoria, Texas Metropolitan Statistical Area.

[3] Today, Magnolia Beach is a lightly populated, but developing bay front community.

[18][17] The Calhoun County Independent School District (CCISD) provides public education in the Magnolia Beach community.