No. Speed of a body is the overall distance travelled per unit time; irrespective of its direction. Velocity of a body is the overall displacement occured per unit time; with regard to its direction. If a body is moving with a constant velocity, then its magnitude and direction remain constant. Speed is the magnitude of velocity. Therefore, speed also remains same.
[Read: Motion in a Straight Line]
A player hits a baseball at some angle. The ball goes high up in space. The player runs and catches the ball before it hits the ground. Which of the two (the player or the ball) has greater displacement?