This non-interventional study will observe the usage and efficacy of RoActemra/Actemra in patients with rheumatoid arthritis (RA) who have recently begun treatment. The treatment regimen will be directed by the treating physician according to clinical practice. Patients are expected to be observed for approximately 6 months after beginning treatment.

Inclusion Criteria:

• Patients at least 18 years of age
• Patients with a diagnosis of moderate to severe RA according to the revised (1987) ACR criteria
• Patient in whom the treating physician has made the decision to commence RoActemra/Actemra treatment (in accordance with the local label). This can include patients who have received RoActemra/Actemra treatment within 8 weeks prior to the enrolment visit
• Patient has given informed consent

Exclusion Criteria:

• Patients who have received RoActemra/Actemra more than 8 weeks prior to the enrolment visit
• Patients who have previously received RoActemra/Actemra in a clinical trial or for compassionate use
• Patients who have received treatment with any investigational agent within 4 weeks (or 5 half-lives of investigational agent, whichever is longer) before starting treatment with RoActemra/Actemra
• Patients with a history of autoimmune disease or of any joint inflammatory disease other than RA

Adult patients with rheumatoid arthritis starting RoActemra/Actemra treatment