Pilar Dominguez is a Spanish voice actor known for her extensive work dubbing anime series into Spanish for audiences in Spain. Her career is primarily associated with voice over studios in Madrid, such as Alamis Doblaje, and she has been active in the industry since at least the 1990s. Dominguez's filmography is substantial, featuring a wide array of roles in many popular and classic anime titles that were localized for the Spanish market.

She has voiced a diverse range of characters across different genres. Among her notable roles are Swatee in the series Can Can Bunny Extra, Rei Asuka in Reideen the Brave, and Pi in Tongari Bōshi no Memoru. Her work also includes the character Tobimisha in Hana no Ko Lunlun and Tia Polly in a redub of the series Pollyanna. Another role credited to her is Maya Thora Calvin in The Erotic Temptress. Dominguez also contributed voices to Houkago Renai Club: Koi no Etude, playing the characters Nanase Horikawa and Shiina Misaki.

Beyond these specific credits, Dominguez has an extensive portfolio of work in major anime franchises. She participated in the Spanish dubs of globally recognized series such as Sailor Moon Sailor Stars, where she voiced multiple characters including Princess Kakyuu and Taiki Kou / Sailor Star Maker. In Digimon Adventure 02, she provided the voice for the character Ken Ichijouji, also known as the Digimon Emperor. Her work in the magical girl genre extends to Cardcaptor Sakura, where she voiced Akane and Spinel. She also had roles in A Little Princess Sara as Lottie, and in the long-running series Urusei Yatsura, voicing characters like Ryūno Fujinami and Sakura. A significant body of her work includes numerous roles in the series Marmalade Boy, such as Arimi Suzuki and Rei Kijima.

Throughout her career, Dominguez has frequently collaborated with a consistent group of fellow Spanish voice actors based in Madrid. These recurring collaborators include José María Carrero, Pepa Agudo, Marta Sáinz, Ingrid Rabel, and Elena Ruiz de Velasco, among others. This ensemble has worked together on numerous dubbing projects, including Can Can Bunny Extra and Houkago Renai Club. Many of these dubs, particularly in the 1990s and 2000s, were produced for television broadcast and home video release in Spain by companies like Arait Multimedia. Pilar Dominguez's career is marked by her prolific contributions to the world of anime localization, bringing a wide variety of Japanese characters to life for Spanish-speaking audiences.