L2-KSU Native and Non-Native Arabic Speech was developed by King Saud University (KSU) and contains approximately six hours of Modern Standard Arabic read speech from 80 subjects, along with transcripts and speaker metadata. The speech data was collected in 2022 from 40 native and 40 non-native speakers. Native speakers were from Saudi Arabia, Egypt, and Palestine. They provided audio recordings through the crowd sourcing platform Khamsat. Non-native speakers were Central and West African students enrolled in KSU's Arabic Linguistics Institute; they provided speech recordings on site. All subjects read a series of ten sentences, repeating each sentence multiple times. Audio is presented as 16-bit 16 kHz wav files. Transcript files in UTF-8 plain text, speaker metadata, and the Arabic sentences with transliteration, English translation and IPA transcription are also included in the documentation accompanying this release.