Mio Tsukushi (Absolutely Lovely Children) using her portals to partially teleport herself.
Illyria (Angel) opening a dimensional portal leading to her temple.
Echidna Parass (Black Cat) linking two spaces with her Gate.
Ōetsu Nimaiya (Bleach) opening a Chōkaimon portal to send Ichigo back to the Human World.
Rukifellth (Bomberman 64: The Second Attack) possesses the Celestial Stone that allows him to manipulate space, using his Blood Sword to open portals to project his blade from the ground.
Road Kamelot (D.Gray-man) creating her Door portals that can travel between dimensions.
Dan Phantom (Danny Phantom) forming a Ghost Portal.
Wulf's (Danny Phantom) claws creates a Ghost Portal in the shape of a tear.
Janemba (Dragon Ball Z) creating dimensional portals to redirect his punches at differing angles.
Janemba (Dragon Ball Z) opening portals in front of himself to redirect any incoming attacks.
Majin Boo's (Dragon Ball Z) Dimension Scream forming a wormhole.
Breach (Generator Rex) opening inter-dimensional portals with her arms.
The Meidō Zangetsuha (InuYasha) is a portal that leads directly to netherworld.
InuYasha (InuYasha) using the Meidō Zangetsuha to fire netherworld portals in the shape of blades that will slice the opponent to shreds before dragging them through,
Obito Uchiha (Naruto) using his Kamui to connect his dimension with Kaguya's to open portals of her worlds.
Minato Namikaze's (Naruto) Space-Time Barrier acts as a portal, transferring an attack to another location.
Kaguya Ōtsutsuki (Naruto) using Yomotsuhirasaga to open portals within her personal dimension so she can travel anywhere, and drag others into other areas.
Blueno (One Piece) creating an Air Door that grants access to a pocket dimension.
Palkia (Pokemon) using Spacial Rend to create a spatial portal.
Giratina (Pokemon) opening a portal between this world and the Distortion World.
Lumina Flowlight (Sonic the Hedgehog)
Time Eater (Sonic the Hedgehog) creating Time Holes.
Midna (The Legend of Zelda) creating a Twilight Portal.
Yukari Yakumo (Touhou Project) creating Gaps in the boundaries that separate locations, creating rifts in space that can connect to anywhere.
The Golden Tiger Claws (Xiaolin Showdown) being used to tear open wormholes.
Konosuke Ōshuta (Yu-Gi-Oh!) using his Deck Master Deepsea Warrior's ability, Reflector Hole, to open a hole in space to warp attacks back at his opponents.
Mahado (Yu-Gi-Oh!) using Afterworld Warp to open inter-spacial portals to warp attacks away.
Yugo (Wakfu) is a skilled portal maker and can make portals to overcome obstacles and enemies.
Fattah the Opener (The 99) can create portals that allow him to journey instantly to any location.
Eden Fesi A.K.A. Manifold (Marvel comics) possesses the mutant ability to mold reality, to tear open space and time connecting one place to another thus allowing him to teleport to just about anywhere in the universe.
Soul Reapers (Bleach) opening a Senkaimon.
Gillians (Bleach) crudely opening a Garganta via their Kūmon technique.
The Espada (Bleach) cleanly opening a Garganta via their Descorrer technique.
Ulquiorra Cifer (Bleach) opening up window portals to broadcast various events.
Noba (Bleach) opening up wormholes to redirect enemy attacks.
Kagerōza Inaba (Bleach) using Raiku to open portals for duplicating space and traveling.
Will Vandom (W.I.T.C.H.) opening and closing portals.
Blink (X-Men Days of Future Past) creating portals in her fight against the sentinels.
Wulf (Danny Phantom) using his claws to tear open a portal between the Ghost Realm and the Living Realm.
Raven Branwen (RWBY) opening a portal using her sword.
Cho the Gatekeeper (Grindhouse and Watercolors) was granted the charge of being the embodiment, guardian and ruler of all locks and barriers, allowing him a plethora of powers that pertains to this.
While using his powers as Dr. Fate, Khalid (DC Comics) can open portals between dimensions by invoking the power of Min, the God of Travelers.