The Modified Booth multiplier is attractive to many multimedia and digital signal processing systems. This paper presents the design of 16 - 16 Modified Booth multiplier. The multipliers such as Braun array multiplier and Array multiplier are used for unsigned multiplication. This paper focusing on design of Modified Booth Multiplier which performs both signed and unsigned multiplication. Here used Carry Select Adder it increases the speed of multiplier operation. Booth encoder multiplier with Carry select Adder utilizes the minimum hardware, reduced chip area, low power dissipation and reduced the cost of the system. © 2015 IEEE.