- GtkAlignment — A widget which controls the alignment and size of its child
- GtkAspectFrame — A frame that constrains its child to a particular aspect ratio
- GtkHBox — A horizontal container box
- GtkVBox — A vertical container box
- GtkHButtonBox
- GtkVButtonBox — A container for arranging buttons vertically
- GtkFixed
- GtkHPaned
- GtkVPaned — A container with two panes arranged vertically
- GtkLayout
- GtkNotebook
- GtkTable
- GtkExpander
- Orientable