In The Present Work, An Extensive Study Has Been Carried Out On The Effect Of Different Surface Modification Approach On Wear And Corrosion Resistance Properties Of Ti-6al- 4v. Attempts Have Been Made To Develop A Thin And Adherent Solid Oxide Titanium Dioxide (Tio2) Layer On The Surface Of Ti-6al-4v By Chemical (By Dipping It In Varying Concentrations Of Hydrogen Peroxide Followed By Isothermal Heat Treatment) And Thermal Route (By Heating Isothermally In The Temperature Range Between 400 To 600ºC And Time Ranging From 25 H To 60 H). The Microstructure Of The Oxidized Surface Revealed The Presence Of Titanium Oxide Whose Coverage Varied With The Technique And Parameters Of Oxidation. A Significant Enhancement Of Microhardness (Up To A Maximum Of 465 Vhn) Was Achieved After Chemical Oxidation As Compared To Asreceived Ti-6al-4v (290 Vhn). The Optimum Conditions For Thermal Oxidation Have Been Established As 600ºC And 36 H For Formation Of A Hard Oxide Layer With Improved Wear Resistance. In Another Attempt, A 2 Kw Continuous Wave Diode Laser Was Applied As A Source Of Heat To Surface Melt (With Argon Shroud) And Surface Nitride (With Nitrogen Shroud) The Ti-6al-4v Substrate. The Microstructure Of The Melted Layer Consists Of Acicular Α’ Martensite. On The Other Hand, Surface Nitriding Forms Dendritic Titanium Nitride Whose Mass Fraction Was Found To Vary With Laser Parameters. The Maximum Microhardness Achieved In The Melt Zone And Nitrided Zone Was 550 Vhn And 1200 Vhn, Respectively, As Compared To 280 Vhn Of As-Received Ti-6al-4v With A Significant Improvement In Pitting Corrosion Resistance In Simulated Body Fluid (Hanks Solution). Under Optimum Processing Conditions Wettability Of The Simulated Body Fluid Against The Treated Surface Was Observed To Have Improved. Finally, A Thin Layer Of Titanium Nitride (Tin) And Titanium Aluminium Nitride (Tialn) Was Developed On Ti-6al-4v Substrate By Cathodic Arc Discharge Evaporation Deposition Under Optimum Process Parameters. After Surface Modification/Coating, A Detailed Characterization Of The Surface Layer Was Carried Out. An Improvement In Hardness Was Achieved With Physical Vapor Deposited Titanium Nitride (Tin) (Hardness Of 550 Vhn) And Titanium Aluminium Nitride (Tialn) (1200 Vhn) On Ti-6al-4v Substrate (280 Vhn). The Wettability Of Both The Coatings (Tin And Tialn) Increased Significantly.