What is the total number of International Standards of Auditing (ISA) ?

There are38 International Standards on Auditing aplicable world wide for statutary Audit. Furthermore there is an IAPN issued also by the IFAC.

u can count :

• ISA200, Overall Objectives of the Independent Auditor and the Conduct of an Audit in Accordance with International Standards on Auditing 
• ISA210, Agreeing the Terms of Audit Engagements 
• ISA220, Quality Control for an Audit of Financial Statements
• ISA230, Audit Documentation 
• ISA240, The Auditor's Responsibilities Relating to Fraud in an Audit of Financial Statements 
• ISA250, Consideration of Laws and Regulations in an Audit of Financial Statements 
• ISA260, Communication with Those Charged with Governance 
• ISA265, Communicating Deficiencies in Internal Control to Those Charged with Governance and Management
• ISA300, Planning an Audit of Financial Statements 
• ISA315, Identifying and Assessing the Risks of Material Misstatement through Understanding the Entity and Its Environment
• ISA320, Materiality in Planning and Performing an Audit 
• ISA330, The Auditor's Responses to Assessed Risks 
• ISA402, Audit Considerations Relating to an Entity Using a Service Organization 
• ISA450, Evaluation of Misstatements Identified during the Audit 
• ISA500, Audit Evidence 
• ISA501, Audit Evidence-Specific Considerations for Selected Items 
• ISA505, External Confirmations 
• ISA510, Initial Audit Engagements-Opening Balances 
• ISA520, Analytical Procedures 
• ISA530, Audit Sampling 
• ISA540, Auditing Accounting Estimates, Including Fair Value Accounting Estimates, and Related Disclosures 
• ISA550, Related Parties 
• ISA560, Subsequent Events 
• ISA570, Going Concern
• ISA580, Written Representations 
• ISA600, Special Considerations-Audits of Group Financial Statements (Including the Work of Component Auditors)  
• ISA610, Using the Work of Internal Auditors 
• ISA620, Using the Work of an Auditor's Expert
• ISA700, Forming an Opinion and Reporting on Financial Statements 
• ISA705, Modifications to the Opinion in the Independent Auditor's Report
• ISA706, Emphasis of Matter Paragraphs and Other Matter Paragraphs in the Independent Auditor's Report 
• ISA710, Comparative Information-Corresponding Figures and Comparative Financial Statements 
• ISA720, The Auditor's Responsibilities Relating to Other Information in Documents Containing Audited Financial Statements
• ISA800, Special Considerations-Audits of Financial Statements Prepared in Accordance with Special Purpose Frameworks 
• ISA805, Special Considerations-Audits of Single Financial Statements and Specific Elements, Accounts or Items of a Financial Statement 
• ISA810, Engagements to Report on Summary Financial Statements 
• International Standard on Quality Control (ISQC)1, Quality Controls for Firms that Perform Audits and Reviews of Financial Statements, and Other Assurance and Related Services Engagements