An observational, prospective, multi-center, non-randomized registry designed to obtain real world clinical experience with the TactiFlex Catheter Ablation system in the treatment of Atrial Fibrillation. Patient assessments will occur at pre procedure and procedure, and 1 year post ablation

Inclusion Criteria:

• Patients who, in the opinion of the investigator, are candidates for ablation to treat atrial fibrillation.
• Plans to undergo an ablation procedure using the TactiFlex Ablation Catheter™, Sensor Enabled™ (TactiFlex SE) manufactured by Abbott.
• De Novo or redo AF catheter ablation procedures.
• Able and willing to participate in baseline and all follow up evaluations.
• 18 years of age or older.

Exclusion Criteria:

• Enrolled in any other cardiac device clinical trial, investigational drug trial, or any other trial that may confound the results of the ablation procedure.
• In the opinion of the investigator, any known contraindication to an ablation procedure or to any device or drug required for use during an ablation procedure as assessed by the investigator.

Participants with atrial fibrillation undergoing ablation at selected sites who meet eligibility. Site in US, Canda, and OUS