Yes there is, it involes a minor amount of code wrangling. First of all you need to install a child-theme. You can get plugins for that if you’ve not already got one. This will create a directory on your server called wp-content/themes/your-child-theme.
In that directory create a buddypress/groups directory.
The next step is to work out which BP Theme you are using. You can find that by looking in Settings>>BuddyPress>>Options.
Once you know that, you will be able to find a file called `wp-content/plugins/buddypress/bp-templates/your-bp-theme/buddypress/groups/groups-loop.php.
Take a copy of this file and find this part:
<?php if ( bp_has_groups( bp_ajax_querystring( 'groups' ) ) ) : ?>
Change that to:
<?php if ( bp_has_groups( bp_ajax_querystring( 'groups' ) . '&order=ASC&orderby=name' ) ) : ?>
Next you put this file in the themes/child-theme/buddypress/groups directory you created earlier.
Hopefully they create a setting soon that would alleviate the need to go thru all these steps. Your instructions seem fairly straightforward, although I’m not sure what half of it is. I’ll ask my bestie Google for help on that. Thanks for the reply!
The solution provided by @venutius will work just fine.
Personally, I would use this filter hook from groups_get_groups in bp-groups-functions.php:
apply_filters_ref_array( 'groups_get_groups', array( &$groups, &$r ) );
And one of the php array sort functions to resort the groups, probably asort.
