Resonator and resonance device

A resonator comprising:

• a vibrating portion including:
• a base having first and second ends that oppose each other, and
• at least three vibrating arms that each have a fixed end connected to the first end of the base and include at least two vibrating arms configured to bend out of plane with different phases of one another;
• a frame configured to hold the vibrating portion;
• and
• a support arm having a first end connected to the frame and a second end connected to the second end of the base,
• wherein the second end of the support arm is connected to a position in a range from −0.1 WB to 0.1 WB relative to a position on the second end of the base, where a center line of the vibrating portion in a longitudinal direction thereof passes in a plan view with respect to a base width WB that is a length of the base in a direction orthogonal to the center line, and
• wherein a length of the support arm in a direction parallel to the longitudinal direction of the vibrating portion is 0.2 or more times and 0.4 or less times a length of each the vibrating arms in the longitudinal direction.