Support our Scouts Act of 2005 - Prohibits any Federal law from being construed to limit any Federal agency from providing any form of support for a youth organization (including the Boy Scouts of America or any group officially affiliated with the Boy Scouts of America) that would result in that Federal agency providing less support to that youth organization (or any similar organization chartered under Federal law relating to the Boy Scouts of America) than was provided during each of the preceding four fiscal years.

Amends the Housing and Community Development Act of 1974 to prohibit any State or unit of general local government that has a designated open forum, limited public forum, or nonpublic forum and that is a recipient of assistance under the Act from denying equal access or a fair opportunity to meet to, or discriminate against, any youth organization, including the Boy Scouts of America or any group officially affiliated with the Boy Scouts of America, that wishes to conduct a meeting or otherwise participate in that designated open forum, limited public forum, or nonpublic forum.