| English | annual ryegrass | | | 1 | Wiersema, J. H. & B. León. 1999. World economic plants: a standard reference CRC Press, Boca Raton, FL. |
| English | Italian ryegrass | | | 1 | Wiersema, J. H. & B. León. 1999. World economic plants: a standard reference CRC Press, Boca Raton, FL. |
| English | lovitto ryegrass | | | 1 | Integrated Botanical Information System (IBIS). Australian plant common name database (on-line resource). |
| English | Westerwold ryegrass | | | 1 | Terrell, E. E. 1968. A taxonomic revision of the genus Lolium. Techn. Bull. U.S.D.A. 1392:10. |
| English | Westerwolds ryegrass | | | 1 | Integrated Botanical Information System (IBIS). Australian plant common name database (on-line resource). |
| Afrikaans | Italiaanse raaigras | | | 2 | Henderson, L. 2001. Alien weeds and invasive plants: a complete guide to declared weeds and invaders in South Africa. Plant Protection Research Institute, Handbook 12 |
| English (Canada) | Italian rye grass | | Agriculture & Agri-Food Canada official name | 2 | Darbyshire, S. J. 2003. Inventory of Canadian Agricultural Weeds Agriculture and Agri-Food Canada. 30. |
| French | ivraie multiflore | | | 2 | Rehm, S. 1994. Multilingual dictionary of agronomic plants |
| French | ray-grass d'Italie | | | 2 | Rehm, S. 1994. Multilingual dictionary of agronomic plants |
| French (Canada) | ivraie multiflore | | Agriculture & Agroalimentaire Canada nom officiel | 2 | Darbyshire, S. J. 2003. Inventory of Canadian Agricultural Weeds Agriculture and Agri-Food Canada. 30. |
| German | italienisches Raygras | | | 2 | Rehm, S. 1994. Multilingual dictionary of agronomic plants |
| German | welsches Weidelgras | | | 2 | Rehm, S. 1994. Multilingual dictionary of agronomic plants |
| German | westerwoldisches Weidelgras | | | 2 | Terrell, E. E. 1968. A taxonomic revision of the genus Lolium. Techn. Bull. U.S.D.A. 1392:10. |
| Italian | loglio italico | | | 2 | International Seed Testing Association. 1982. A Multilingual Glossary of Common Plant-Names 1. Field crops, grasses and vegetables, ed. 2. |
| Portuguese | azevém | | | 2 | Rehm, S. 1994. Multilingual dictionary of agronomic plants |
| Spanish | ballico italiano | | | 2 | Rehm, S. 1994. Multilingual dictionary of agronomic plants |
| Spanish | raygrás italiano | | | 2 | Rehm, S. 1994. Multilingual dictionary of agronomic plants |
| Swedish | italienskt rajgräs | | | 2 | Aldén, B., S. Ryman, & M. Hjertson. 2012. Svensk Kulturväxtdatabas, SKUD (Swedish Cultivated and Utility Plants Database; online resource) |
| Transcribed Chinese | duo hua hei mai cao | | | 2 | Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). |