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Falls are a major public health concern in older adults, largely due to age-related declines in proprioception and postural control. Although knee braces are commonly prescribed to enhance joint stability and sensory feedback, their effects on plantar pressure distribution remain unclear; Thirteen community-dwelling older adults (mean age: 79.6 ± 3.2 years) participated in a repeated-measures study under three conditions: no brace, knee brace A, and knee brace B. Plantar pressure variables were assessed barefoot during quiet standing using a baropodometric platform. Conditions were compared using non-parametric Friedman tests; Significant differences were observed for left foot total surface area (p = 0.041) and left rearfoot surface area (p = 0.020). Compared with no brace, brace A increased plantar contact area, whereas brace B reduced it. No significant differences were found for pressure magnitude, load distribution, or right foot variables; Knee braces induce subtle, brace-specific and lateralized changes in plantar pressure distribution, potentially reflecting altered postural control strategies. Although limited to specific variables, these effects may be clinically relevant for fall risk assessment and individualized knee brace prescription in older adults.