"Cub Scouts is a lot of fun, and now it's available to all kids", said Stephen Medlicott, BSA marketing director.
The name change comes amid strained relations between the Girl Scouts and Boy Scouts of America.
The parent organization will remain the Boy Scouts of America, and the Cub Scouts - its program serving children from kindergarten through fifth grade - will keep its title, as well.
For 108 years, the Boy Scouts of America's flagship program has been known simply as the Boy Scouts.
Surbaugh said BSA's national leadership respected the Girl Scouts' program and hoped both organizations could gain strength.
After existing quite nicely for more than 100 years, political correctness has driven a stake right through the heart of the Boy Scouts. In its peak in the 1970s, the Boy Scouts of America had close to five million members, but this year, the organization said they had about 1.25 million Cub Scouts and over 800,000 Boy Scouts.
Written by Eric Levenson and Amanda Watts for CNN.
The organization also tweeted: "Fact: Girl Scouts works. Liberals tell us that masculinity is "toxic" and that girls can be boys and boys should no longer be boys", he continued.
Scouts BSA, the program for 11-to-17-year-olds, will stay divided along gender lines.
"So, Boy Scouts is admitting girls and won't be called Boy Scouts anymore". Several months before that, the group announced it would accept and register transgender youths into its organization. That includes Venturing and Sea Scouting programs, the latter allowing membership up to 21 years of age.
The Guardian's Ben Jacobs noted on Twitter that Michael Williams, a Republican candidate for governor of Georgia, said that if the Boy Scouts of today - and the supporters of its new changes - parented the soldiers who fought in WWII, the war would have been won by the Axis Powers.
The Girl Scouts list a series of efforts created to "stay ahead of the pack of youth organizations".