Speech-language pathology (or speech and language pathology) is a healthcare field of expertise practiced globally. Speech-language pathology (SLP) specializes in the evaluation, diagnosis, treatment, and prevention of communication disorders (speech and language impairments), cognitive-communication disorders, voice disorders, and swallowing disorder across the lifespan. It is an independent profession that is sometimes considered a "related health profession" or allied health profession by professional bodies like the American Speech-Language-Hearing Association (ASHA) and Speech Pathology Australia. Allied health professions include audiology, optometry, occupational therapy, rehabilitation psychology, physical therapy and others.

The field of speech-language pathology is practiced by a clinician known as a speech-language pathologist (SLP) or a speech and language therapist (SLT), and sometimes as a speech therapist. An SLP is a university-trained individual who provides professional services in the areas of communication and swallowing. SLPs also play an important role in the screening, diagnosis and treatment of autism spectrum disorder often in collaboration with pediatricians and psychologists.

SLPs specialize in the evaluation, diagnosis, treatment, and prevention of communication disorders (speech and language impairments), cognitive-communication disorders, voice disorders, and swallowing disorders. SLPs also play an important role in the diagnosis and treatment of autism spectrum disorder (often in a team with pediatricians and psychologists).